Question

Tìm y biết 

(1/4×y-1/8)×3/4=1/8

Answer 1

\(\left(\frac{1}{4}\times y-\frac{1}{8}\right)\times\frac{3}{4}=\frac{1}{8}\)

\(\frac{1}{4}\times y-\frac{1}{8}=\frac{1}{8}:\frac{3}{4}\)

\(\frac{1}{4}\times y-\frac{1}{8}=\frac{1}{6}\)

\(\frac{1}{4}\times y=\frac{1}{6}+\frac{1}{8}\)

\(\frac{1}{4}\times y=\frac{7}{24}\)

\(y=\frac{7}{24}:\frac{1}{4}\)

\(y=\frac{7}{6}\)

~ Thiên Mã ~