a) 25 = X - 19 + 30 + X
25 = X - 49 + 2X
25 + 49 = 2X
X = 74/2 = 37
b) X - 12 + 18 + X = 13 + 15
2X = 28 + 30 = 58
X = 58/2 = 29
a) 25 = X - 19 + 30 + X
25 = X - 49 + 2X
25 + 49 = 2X
X = 74/2 = 37
b) X - 12 + 18 + X = 13 + 15
2X = 28 + 30 = 58
X = 58/2 = 29
tim x biet
a, 25-(30+x)=x-(27-8)
b,(x-12)-15=(20-7)-(18+x)
a,25+[x+17]=0 ; b'20-[x+12]=0 ; c, 15+[5-x]=-7 ; d, 3-5+[-x+3]=6 ; e, 25-[30+x]=x-[27-8] ; f, [x-12]-15=[20-7]-[18+x]
tìm x
a ) 25 - ( 30 + x ) = x - ( 27 - 8 )
b ) ( x -12 ) -15 = ( 20 - 7 ) - ( 18 + x )
Tìm x:
a) x - (17 - 8) = 5 + (10 - 3x)
b) 25 - (30 +x) = x - (27 - 8)
c) (x-12) - 15 = (20 - 7) - (18 + x)
d) 9 - 25 = (7 - x) - (25 + 7)
Tìm x biết:
a. x-(17-8)=5+(10-3x)
b. 25-(30+x)=x-(27-8)
c. (x-12)-15=(20-7)-(18+x)
x - ( 17 - 8 ) = 5 + ( 10 + 3x )
25 - ( 30 + x ) = x - ( 27 - 8 )
( x - 12 ) - 15 = ( 20 - 7 ) - ( 18 + x )
- 5 + 2 / x + 3 / = - 6 - (- 13 )
Dấu / : giá trị tuyệt đối nha
tìm x biết,
a)x-13=-5+8
b)|x-2|=|-5|
c)25-(30+x)=x-(27-8)
d)(x-12)-15=(20-7)-(18+x)
x - ( 17 - 8 ) = 5 + ( 10 + 3x )
25 - ( 30 + x ) = x - ( 27 - 8 )
( x - 12 ) - 15 = ( 20 - 7 ) - ( 18 + x )
-5 + 2 . / x + 3 / = - 6 - ( - 13 )
/ là giá trị tuyệt đối ai làm nhanh nhất k
Tìm x biết
a) 25 - ( 30 + x ) = - ( 3x - 27 )
b) ( x - 12 ) - 15 = ( 20 - 7 ) - ( 18 + x )
a) 16 - 18/x| = -8 -14|x|
b) 5 x|+7.(2/x|-3) =4.(x-4)+25
e) 15-3|4x +2| = 3 8) 18 -4.(6-2|x|) = - 3.(4|x|+5)+29
8) 27-5/x -10 = 4|x-10| - 18
h) 510 + 3x|-21 = 7- 2|15+3x|
c) 43x +2|-16= 20
d) 8|x - 1|-4 = 12+6|x-1|
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