Question

4/8 =a/32 .tim gia tri cua a

 

36/a=45/60

Answer 1

a = 32 : 8 * 4 =16

45 / 60 = 3 / 4

a = 36 : 3 * 4 = 48

Answer 2

\(\frac{4}{8}=\frac{a}{32}\Leftrightarrow4.32=8.a\Rightarrow a=\frac{32.4}{8}=\frac{4.8.4}{8}=4.4=16\)

Vậy a = 16

\(\frac{36}{a}=\frac{45}{60}\Leftrightarrow36.60=a.45\Rightarrow a=\frac{36.60}{45}=\frac{2.2.3.3.2.2.3.5}{3.3.5}=2.2.2.2.3=48\)

Vậy a = 48