Question

Tìm x, biết:

x - 1/2 = -2/3 2/7 - x = -3/4

Answer 1

a. x- 1/2= -2/3

x = -2/3+(-1/2)

x = -4/6+(-3/6)

x = -7/6

b. 2/7-x=-3/4

x = 2/7-(-3/4)

x = 8/28-(-12/28)

x = 29/28

Chúc bạn học tốt

Answer 2

1.

\(x-\dfrac{1}{2}=\dfrac{-2}{3}\)

\(x=\dfrac{-2}{3}+\dfrac{1}{2}\)

\(x=\dfrac{-1}{6}\)

2.

\(\dfrac{2}{7}-x=\dfrac{-3}{4}\)

\(x=\dfrac{2}{7}-\dfrac{-3}{4}\)

\(x=\dfrac{29}{28}\)