Question

Aflati numarul necunoscut :

(a-45) :5= 120

Answer 1

( a - 45 ) :5 =120

( a - 45 ) = 120 * 5

a - 45 = 600

a = 600 + 45

a = 645

Answer 2

$(a-45):5=120 \\ a-45=120 \times 5 \\ a-45=600 \\ a=600+45 \\ a=645$