Question

caucule o valor de a na equação:
2a/5-3/4=3a/20

Answer 1

2a÷5-3÷4=3a÷20
$\frac{2a}{5}$-0.75=$\frac{3a}{20}$
$\frac{2a}{5}$-$\frac{3}{4}$=$\frac{3a}{20}$
8a-15=3a
8a-15=3a
5a=15
a=3