-5x + -5 . 1/5 - 1/2 .x - 1/2 . 2/3 = 3/2 - x - 5/6
-5x -1 - 1/2x - 1/3 = 3/2 - x - 5/6
-5x - 1/2x - 3/2x = 1 - 1/3 - 5/6
= -1 + 1/3 + 5/6 = 5x + -1x + 3x
= 1/6 = 7x
x = 1/6 :7
x = 1/42
vậy x = 1/42
Tìm x biết : a) -5/6-x=7/12+(-1)/3 b) 2.(x-1/3)=(1/3)^2+5/9 c) |2x-3/4|-3/8=1/8 d) 2/3x+1/6x=3 và 5/8
1) (2x -3) (5/2 – x)=0
2) x – 12 = ½
3) (2x + 3/5)^2 -9/25 = 0
4) 7/3 x – 5/2 x = -1/3
5) ¾ + ¼ : x = 1
6) 1/3 + 2/5 (x+1) = 1
1.Tìm x biết:
a, x/5=x/-1
b, 3(x-1)/-5=4(x+2)/6
c,7-2x/3=0.75-5/4
1. Tìm x biết:
a, 3(x+2)-4x=2(3x-1)+8
b, 5(3-x)-6(x+1)=1/2(2x-4)
1)(2x-5)(x+9)+6x=30
2)(x+3)(5x-15)+2x-6=0
Bài 4. Tìm số nguyên x , biết:
a) |x - 2|= 0 b) |x + 3|= 1 c) -3 |4 - x|= -9 d) |2x + 1|= -2
Bài 5. Tìm số nguyên x, biết:
a) (x + 3)mũ 2 = 36 b) (x + 5)mũ 2 =100 c) (2x - 4)mũ 2 = 0 d) (x - 1)mũ 3 = 27
a)x+1/5=5/6.b)x-3/5=6/7.c)-x-7/5=-8/9.d)3/8-x=2/3.e)|x-8/9|=1/3
\(\frac{1}{4}+\frac{1}{3}\left(2x-1\right)=-5\)
\(\frac{2}{3}x-\frac{1}{2}=\frac{1}{10}\)
\(\left(x.6\frac{2}{7}+\frac{3}{7}\right).2\frac{1}{5}-\frac{3}{7}=-2\)
\(5\frac{4}{7}:x=13\)
\(\left(2\frac{4}{5}x-50\right):\frac{2}{3}=51\)
làm hộ mik nhanh vs ... mik chỉ còn 50p nữa là nộp pài r
\(-5\left(x+\frac{1}{5}\right)-\frac{1}{2}\left(x-\frac{2}{3}\right)=\frac{3}{2}x-\frac{5}{6}\)