Question

afla numarul necunoscut. d-2ori(480ori2-90:10)+5=75

Answer 1

d-2×(480×2-90:10)+5=75
d-2×(960-9)+5=75
d-2×951+5=75
d-1902+5=75
d-1907=75
d=1907+75
d=1982

sper ca te-am ajutat !

Answer 2

D - 2 × ( 480 × 2 - 90 : 10 ) + 5 = 75
d - 2 × ( 960 - 9 ) + 5 = 75
d - 2 × 951 + 5 = 75
d - 1 902 + 5 = 75
d - 1 907 = 75
d = 1 907 + 75
d = 1 982