Question

Пожайлуста Решите уравнения

Answer 1

Делаем накрест

0.7(х+3)=14×3.6

0.7х+2.1=50.4

0.7х=50.4-2.1

0.7х=48.3

х=69

Answer 2

$frac{x + 3}{14} = frac{3.6}{0.7} \ x + 3 = frac{14 times 3.6}{0.7} \ x + 3 = frac{14 times 36}{7} \ x + 3 = frac{2 times 36}{1} \ x + 3 = 72 \ x = 72 - 3 \ x = 69$