Question

rezolvati in Z ecuatiile x+5= -2               x-12= -15                        -3x = 18 va rog mult !!

Answer 1

$\displaystyle a).x+5=-2 \\ x=-2-5 \\ x=-7 \\ b).x-12=-15 \\ x=-15+12 \\ x=-3 \\ c).-3x=18 \\ x=- \frac{18}{3} \\ x=-6$