3/2 - 4(1/4 -x) = 2/3 -7x
3/2 - 1 + 4x = 2/3 -7x
4x + 7x = 2/3 - 3/2 + 1
11x = 1/6
x = 66
3/2 - 4(1/4 -x) = 2/3 -7x
3/2 - 1 + 4x = 2/3 -7x
4x + 7x = 2/3 - 3/2 + 1
11x = 1/6
x = 66
tìm x , biết
a) x/3=8/12 b)x+1/15=1/3
c)-2/7+4/7x=5/7 d)3/4.4-5/4=-1/2
giúp mik nhanh nha
Tìm x biết \(\frac{3}{2}-4\left(\frac{1}{4}-x\right)=\frac{2}{3}-7x\)
Tìm x:
a) 2/5 = 3/4 : x = -1/2
b) 5/7 - 2/3 . x = 4/5
c) 1/2x + 3/5x = -2/3
d) 4/7x - x = -9/14
Bài 4:tìm x
a.7x-x=5^21:5^19+3.2^2.7
b.11x-7x+3^4:3^3=5^4+2x
c.75-5.(x-3)^3=700
d.3.(2x-1)^2=75
e.3^x+3^x+2=270
f.3^x-3-3^2=2.3^2
Cảm ơn các bản !
Bài 3 : Tìm x Z biết.
a) x(x + 2) = 0 e) 7x – 13 = 3 2 .4
b) 5 – 2x = -7 f) 155 – 5(x + 3) = 80
c) (x + 3)(x – 4) = 0 g) 119 + 3 3 .x = 2 3 . 5 2
d) – 32 – 4(x – 5) = 0 h) 3(2x + 1) – 19 = 14
Tìm x để các phân số sau tối giản:
7x+1 /2, 7x+2 /3, 7x+3 /4, 7x+4 /5, ....., 7x+300 /301
Tìm x
x÷3/5÷x=1/2
x÷4+2/7x=-3
x÷(1/4+3/2)x-5/3=1
Tìm x biết:
a)(2x-3)-(x-5)=(x+7)-(x+2)
b)(7x-5)-(6x+4)+(2x+3)-(2x+1)
c)(9x-3)-(8x+5)=(3x+2)
d)(x+7)-(2x+3)=(3x+5)-(2x+4)
Tìm x, y \(\varepsilon\)z, biết:
a/ 4(x-1)-3=3x+5
b/6+2(x-3)=4-2x
c/x-3.(x-2)=7x-x
d/9-3x=15-x