Question

va rog mult!!!!!!!!!!!!!!!

Answer 1

a) (12 + x) + 14=4x - 4; (12 + x) + 14 + 4 = 4x; 12 + x + 14 + 4 = 4x;  x + 30 = 4x;                30 = 3x ; x= 10

b) (3x + 2) : 4 - 2 = 3; (3x + 2) : 4 = 5 ; 3x + 2 = 20 ; 3x = 18 ; x= 9

c) (x + 3) . 3 + 3 = 99 : 3 ; (x + 3) . 3 = 294 ; x + 3 =98 ; x= 95

d) 5x : 2 = 2525 ; 5x = 5050 ; x=1010