Question

calculeaza numarul necunoscut:(ax5):2=40:4

Answer 1

$(a \times 5) \div 2 = 40 \div 4$

$5a \div 2 = 10$

$5a = 10 \times 2$

$5a = 20$

$a = \frac{20}{5}$

$a = 4$

Answer 2

5a : 2 = 40 : 4

5a : 2 = 10

5a = 20

a = 4