=>x-57+42-23-x=13-47-25+32-x
=>x-x-57+42-23=-27-x
=>-57+42-23=-27-x
=>-38=-27-x
=>x=-27-(-38)
=>x=11
x-57+42-23-x=13-47-25+32-x
x=13-47-25+32+23-42+57
x=11
tick nha bạn
=>x-57+42-23-x=13-47-25+32-x
=>x-x-57+42-23=-27-x
=>-57+42-23=-27-x
=>-38=-27-x
=>x=-27-(-38)
=>x=11
x-57+42-23-x=13-47-25+32-x
x=13-47-25+32+23-42+57
x=11
tick nha bạn
X-{57-[42+(-23-x)]}=13-{47+[25-(32-x)]}
Tìm số nguyên x biết:
a/ 43+(9-21)=317-(x+317)
b/(15-x)+(x-12)=7(-5+x)
c/x-{57-[42+(-23-x)]}=13-{47+25-(32-x)]}
X-(57-(42+(-23-x)=13-47+25-23-x
Các bn giúp mk giải bài này nha ,ai đúng mk tick cho nha
Tìm x thuộc Z biết
a) ( 15 - x ) + ( x + 12 ) = 7 - (x + 5 )
b) x - { 57 - [42 + ( -23 -x ) ]} = 13 - { 47 + [ 25 - ( 32 - x)]}
Tìm x \(\in\)Z, biết:
x – { 57 – [ 43 + ( – 23 – x )]} = 13 – { 47 + [ 25 – ( 32 – x )]}
[(10-x).2+51]:3-2=3 (X-12)-15=20-(17+x) 720-[41-(2x-5)]=2( mũ 3). 5 | (2x là 2 nhân x,chấm là dấu nhân X-{57-[42+(-23-x)]}=13-{47+[25-(32-x)]}
a , 43 + ( 9 - 21 ) = 317 - ( x + 317 )
b , ( 15 - x ) + ( x - 12 ) = 7 - ( -5 + x )
c , x - { 57 - [ 42 + ( -23 - x )]} = 13 - { 47 + [ 25 - ( 32 - x )]}
d , -7 + | x - 4 | = -3
e , 13 - | x + 5 | = 13
g , | x - 10 | - ( -12 ) = 4
h , | x + 2 | < 5
BT
a,,43+(9-21)=317-(x+317)
b,,(15-x)+(x-12)=7-(-5+x)
c,,x-{57 -[42 +(-23-x)]}=13-{47+[25-(32-x]}
d,,|x|+|y|=1
e,,(x+1) +(x+3)+(x+5)+...+(x+99)=o
a. x + (-45) = (-62 ) + 17
b. x + 29 = /-43/ + (-43)
c. 43 + (9 - 21) = 317 - ( x +317)
d. (15 - x ) + ( x - 12 ) = 7 - ( -5 + x )
e. x - { 57 - [ 42 + ( -23 - x ) ] } = 13 - { 47 + [ 25 - ( 32 - x ) ] }
f. / x / + /-4/ = 7