x/2 = 5/4 + 3/4
=>x/2 = 2
=>x/2 = 4/2
=> x = 4
x/2 - 3/4 = 5/4
x/2 = 5/4 + 3/4
x/2 = 2
x/2 = 4/2
=> x = 4
Tìm x biết x+5/12=-2/3 b,4/5+3/4:x=1/2 c,x/2+x/3=1/4
Tìm X:
a, 3/7- (2/5 + X + 3/2) = 5/14 - /4/35 - (-11)/70 /
b,3/4(x-8) = 5/7.(4-1/2)
c,3/2 - 4(1/4 - x) = 2/3 - 7x
d,4.(1/2-x) - 5.(x-3/10) = 7/4
tìm x biết
a).|x|-3/4=4/5
b).|x+1/3|-1/2=1/4
c).3.|2.x-3|+4=9/2
d).|2.x-5|=x-1
e).|3-4.x|=2-x
1. Tìm x biết:
a) | 3/2.x + 1/2 | = | 4x - 1 |
b) | 5/4.x - 7/2 | - | 5/8.x + 3/5 | = 10
c) | 7/5.x + 2/3 | = | 4/5.x - 1/4 |
2)tìm x:
a)x-2/3=4/5.3/4
b)x-11/18=0,2+7/18
c)-3/8x+3/10=4/5
d)3/5+2/5x=1
Tìm x, biết :
a) 9/4 . |x| - 5/2 = 8/3
b) 1/2 . |x| + 3/4 = 2/3
c) | x + 1/5 | - 4 = -2
Tìm x:
a) \(\dfrac{11}{12}\) - (\(\dfrac{2}{5}\) + \(\dfrac{3}{4}\)x) \(\dfrac{2}{3}\)
b) \(\dfrac{-2}{5}\) + \(\dfrac{5}{3}\) . (\(\dfrac{3}{2}\) - \(\dfrac{4}{15}\)x) = \(\dfrac{-7}{6}\)
c) \(\dfrac{1}{2}\) + \(\dfrac{3}{4}\)x = \(\dfrac{1}{4}\)
Tìm x, biết
a)\(\dfrac{1}{2}\)x\(x\)-\(\dfrac{7}{3}\)=\(\dfrac{-5}{6}\)+\(\dfrac{3}{4}\)x\(x\)
b)\(\dfrac{4}{5}\)x\(x\)-\(\dfrac{6}{5}\)=\(\dfrac{1}{2}\)+\(\dfrac{3}{2}\)x\(x\)
c)\(\dfrac{2}{5}\)x(3x\(x\)+\(\dfrac{3}{4}\))=\(1\dfrac{1}{5}\)-\(\dfrac{1}{3}\)x\(x\)
d)2x(3x\(x \)+\(\dfrac{3}{4}\))+\(\dfrac{4}{5}\)=\(\dfrac{1}{2}\)-2x\(x\)
Bài 1. Tìm x, biết:
a/ 1/4.(x-3)+2=1/5
b/ 1/7-2.(x+1)=1/4+2/3
c/ 1/4.(2x+3)-1/9=2/5
d/ 3/2.(x+1)-4/9=2/3
e/ 4/5.(2-3x)+4/7=2và1/3
[Cần gấp ạ!]
TÌM X, BIẾT:
a) 3 . ( 1/2 - x ) + 1/3 = 7/6 - x
b) 4 . ( 1/2 - x ) - 5 . ( x - 3/10 ) = 7/4
c) -3/2 . ( 4/5 - 2/3 ) + x = 4 . ( x - 1/2 )
d) 2 . ( 3/2 - x ) - 1/3 = 7x - 1/4
e) 1/5 . ( -3/5 -10 ) + 5x = x - 2/3
f) -3/2 . ( 5 - 1/6 ) + 4 . ( x - 1/2 ) = 1
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