Question

[Nguyễn Kim Trâm]

\(\frac{x}{20}\)= \(\frac{3}{4}\)+ \(\frac{-3}{5}\)

Answer 1

[Nguyen Dinh Duc]

\(\frac{x}{20}=\frac{3}{4}+\frac{-3}{5}\)

\(\frac{x}{20}=\frac{15}{20}+\frac{-12}{20}\)

\(\frac{x}{20}=\frac{3}{20}\)

Vậy x=3

Answer 2

[Ori Tinh Nghịch]

\(\frac{x}{20}=\frac{3}{4}+\frac{-3}{5}\)

\(\frac{3}{4}+\frac{-3}{5}=\frac{x}{20}\)

=\(\frac{15}{20}+\frac{-12}{20}=\frac{x}{20}\)

= \(\frac{3}{20}=\frac{x}{20}\)

=> x = 3

 Vậy x= 3

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