a) x+1/6=-2/3 b)x-3/10=1/5 c) x/2=x+1/3 d)x-1/3=x+1/2 e) 2.x-1/3 = x+1/2 g) x-1/-2=x+1/-3 h)x-1/2=2/x-2 i) x-1/9=1/x-2
1 câu trả lời
a) 𝑥 + $\frac{1}{6}$ = $\frac{-2}{3}$
𝑥 = $\frac{-2}{3}$ - $\frac{1}{6}$
𝑥 = $\frac{-5}{6}$
b) 𝑥 - $\frac{3}{10}$ = $\frac{1}{5}$
𝑥 = $\frac{1}{5}$ + $\frac{3}{10}$
𝑥 = $\frac{1}{2}$
c) $\frac{𝑥}{2}$ = 𝑥 + $\frac{1}{3}$
$\frac{𝑥}{2}$ −𝑥 = 𝑥 + $\frac{1}{3}$ - 𝑥
$\frac{𝑥}{2}$ + $\frac{2(-x)}{2}$ = 𝑥 + $\frac{1}{3}$ - 𝑥
$\frac{x + 2(-x)}{2}$ = 𝑥 + $\frac{1}{3}$ - 𝑥
$\frac{x - 2x}{2}$ = 𝑥 + $\frac{1}{3}$ - 𝑥
$\frac{-x}{2}$ = 𝑥 + $\frac{1}{3}$ - 𝑥
$\frac{-x}{2}$ = $\frac{1}{3}$
2. $\frac{-x}{2}$ = 2. $\frac{1}{3}$
-𝑥 = 2. $\frac{1}{3}$
-𝑥 = $\frac{2}{3}$
$\frac{-x}{-1}$ = $\frac{2/3}{-1}$
𝑥 = $\frac{2/3}{-1}$
𝑥 = -$\frac{-2}{3}$