Question

2/5 . x = 32

3/4 . x = 21

encontre o valor de x

Answer 1

$\frac{2}{5} \times x = 32 \\ 2 \times x = 32 \times 5 \\ 2x = 160 \\ x = \frac{160}{2} \\ x = 80 \\ \\ \\ \frac{3}{4} \times x = 21 \\ 3x = 21 \times 4 \\ 3x = 84 \\ x = 84 \div 3 \\ x = 28$