Question

11. Rezolvaţi în Z ecuațiile:
a) 12x + 35 = 7x; b) 11x + 56 = 7x;
c) 15x + 45 = 6x; d) 13x + 90 = 8x.​

Answer 1

a) 12x-7x=-35
5x=-35
x=-7

b)11x-7x=-56
4x=-56
x=-14

c)15x-6x=-45
9x=-45
X=-5

d)13x-8x=-90
5x=90
x=18