Question

rezolvati ecuatiile in Z
a) x+5=-2 b) x-12=-15 c) -3x=18 d) x:(-2)=4 e) 3x=-12 f) 7x-8=-22

Answer 1

x=-2-5= -7
x=-15+12=-3
x=18:(-3)=-6
x=4 x (-2)=-8
x=-12:3=-4
7x=-22+8=-2