Question

giúp mik với nha cảm ơn mọi người 

Answer 1

Bài 2:

a: \(x+\frac19=\frac36\)

=>\(x=\frac36-\frac19=\frac{9}{18}-\frac{2}{18}=\frac{9-2}{18}=\frac{7}{18}\)

b: \(x-\frac38=\frac{15}{4}\)

=>\(x=\frac{15}{4}+\frac38=\frac{30}{8}+\frac38=\frac{30+3}{8}=\frac{33}{8}\)

c: \(\frac67-x=\frac{10}{14}\)

=>\(\frac67-x=\frac57\)

=>\(x=\frac67-\frac57=\frac17\)

Bài 3:

a: \(\frac58-\frac14+\frac76=\frac58-\frac28+\frac76=\frac38+\frac76\)

\(=\frac{9}{24}+\frac{28}{24}=\frac{9+28}{24}=\frac{37}{24}\)

b: \(2-\frac45-\frac12\)

\(=\frac{20}{10}-\frac{8}{10}-\frac{5}{10}=\frac{20-8-5}{10}=\frac{7}{10}\)