Câu hỏi của AN YẾN NHI

Question

1. tìm x1.15: (x + 2)= 32)20:(2 + x)= 23)240:(x - 5)=4.25 - 204.96-3(x + 1)=425.5(x+35)=515 6.12x-33=9.277.541+(218-x)=738.1230:3(x-20)=109.4+(x+3)=25

So_Min_Hwan · Accepted Answer

`15:(x+2)=3``x+2=5``x=3``20:(2+x)=2``2+x=10``x=8``240:(x-5)=80``x-5=3``x=8``3(x+1)=24``x+1=8``x=7``x+315=103``x=-212`Câu trả lời: `15:(x+2)=3``x+2=5``x=3``20:(2+x)=2``2+x=10``x=8``240:(x-5)=80``x-5=3``x=8``3(x+1)=24``x+1=8``x=7``x+315=103``x=-212`

Kiều Vũ Linh · Answer

1) 15 : (x + 2) = 3x + 2 = 15 : 3x + 2 = 5x = 5 - 2x = 32) 20 : (2 + x) = 22 + x = 20 : 22 + x = 10x = 10 - 2x = 83) 240 : (x - 5) = 4 . 25 - 20240 : (x - 5) = 80x - 5 = 240 : 80x - 5 = 3x = 3 + 5x = 84) 96 - 3(x + 1) = 423(x + 1) = 96 - 423(x + 1) = 54x + 1 = 54 : 3x + 1 = 18x = 18 - 1x = 175) 5(x + 35) = 515x + 35 = 515 : 5x + 35 = 103x = 103 - 35x = 686) 12x - 33 = 9 . 2712x - 33 = 24312x = 243 + 3312x = 276x = 276 : 12x = 237) 541 + (218 - x) = 73218 - x = 73 - 541218 - x = -467x = 218 - (-468)x = 6868) 1230 : 3(x - 20) = 103(x - 20) = 1230 : 103(x - 20) = 123x - 20 = 123 : 3x - 20 = 41x = 41 + 20x = 619) 4 + (x + 3) = 25x + 3 = 25 - 4x + 3 = 21x = 21 - 3x = 18Câu trả lời: 1) 15 : (x + 2) = 3x + 2 = 15 : 3x + 2 = 5x = 5 - 2x = 32) 20 : (2 + x) = 22 + x = 20 : 22 + x = 10x = 10 - 2x = 83) 240 : (x - 5) = 4 . 25 - 20240 : (x - 5) = 80x - 5 = 240 : 80x - 5 = 3x = 3 + 5x = 84) 96 - 3(x + 1) = 423(x + 1) = 96 - 423(x + 1) = 54x + 1 = 54 : 3x + 1 = 18x = 18 - 1x = 175) 5(x + 35) = 515x + 35 = 515 : 5x + 35 = 103x = 103 - 35x = 686) 12x - 33 = 9 . 2712x - 33 = 24312x = 243 + 3312x = 276x = 276 : 12x = 237) 541 + (218 - x) = 73218 - x = 73 - 541218 - x = -467x = 218 - (-468)x = 6868) 1230 : 3(x - 20) = 103(x - 20) = 1230 : 103(x - 20) = 123x - 20 = 123 : 3x - 20 = 41x = 41 + 20x = 619) 4 + (x + 3) = 25x + 3 = 25 - 4x + 3 = 21x = 21 - 3x = 18

Chuu · Answer

`15: (x + 2)= 3``x+2=15:3``x+2=5``x=5-2``x=3`___________________________`20:(2 + x)= 2``2+x=20:2``2+x=10``x=10-2``x=8`_______________________________`240:(x - 5)=4.25 - 20``240 :(x-5) = 100 - 20``240:(x-5)=80``x-5=240:80``x-5=3``x=3+5``x=8`_____________________________`96-3(x + 1)=42``3.(x+1)=96-42``3.(x+1)=54``x+1=54:3``x+1=18``x=18-1``x=17`_______________________________`5(x+35)=515``x+35=515:5``x+35=103``x=103-35``x=68`___________________________`12x-33=9.27``12x - 33 = 243``12x=243+33``12x=276``x=276:12``x=23`______________________________`541+(218-x)=73``218-x=73-541``218-x=-468``x=218-(-468)``x=218+468``x=686`__________________________`1230:3(x-20)=10``3.(x-20)=1230:10``3.(x-20)=123``x-20=123:3``x-20=41``x=41+20``x=61`__________________________`4+(x+3)=25``x+3=25-4``x+3=21``x=21-3``x=18`Câu trả lời: `15: (x + 2)= 3``x+2=15:3``x+2=5``x=5-2``x=3`___________________________`20:(2 + x)= 2``2+x=20:2``2+x=10``x=10-2``x=8`_______________________________`240:(x - 5)=4.25 - 20``240 :(x-5) = 100 - 20``240:(x-5)=80``x-5=240:80``x-5=3``x=3+5``x=8`_____________________________`96-3(x + 1)=42``3.(x+1)=96-42``3.(x+1)=54``x+1=54:3``x+1=18``x=18-1``x=17`_______________________________`5(x+35)=515``x+35=515:5``x+35=103``x=103-35``x=68`___________________________`12x-33=9.27``12x - 33 = 243``12x=243+33``12x=276``x=276:12``x=23`______________________________`541+(218-x)=73``218-x=73-541``218-x=-468``x=218-(-468)``x=218+468``x=686`__________________________`1230:3(x-20)=10``3.(x-20)=1230:10``3.(x-20)=123``x-20=123:3``x-20=41``x=41+20``x=61`__________________________`4+(x+3)=25``x+3=25-4``x+3=21``x=21-3``x=18`

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