Question

Tìm x, biết:

a)x=\(\frac{-1}{2}+\frac{3}{4}\)

b)\(\frac{x}{5}=\frac{5}{6}+\frac{-19}{30}\)

Answer 1

a)x=-2/4+3/4=1/4

b)x/5=25/30+-19/30=6/30=1/5=>x=1.

THAM KHẢO NHÉ

CHÚC BN HỌC TỐT

Answer 2

a)x\(=\frac{-1}{2}+\frac{3}{4}=\frac{-2}{4}+\frac{3}{4}=\frac{-2+3}{4}=\frac{1}{4}\)

b) Ta có: \(\frac{5}{6}+\frac{-19}{30}=\frac{25}{30}+\frac{-19}{30}=\frac{25-19}{30}=\frac{6}{30}=\frac{1}{5}\)

Vậy,\(\frac{x}{5}=\frac{1}{5}\)⇒\(x=1\)