Question

Rezolvati ecuatiile:

c) {-3•[18-(x-3)•(-4)]-6}:(-2)=0
d) {[-3•(-x-1)-16]:(-2)+5}•(-2)=-8
e) {20-2•[8-(4-x):(-4)]}•(-7)=-42
f) {1-[4-(x-2):(-3)]:(-5)}:(-1)=-2

Answer 1

c) -3×[18-(-4x+12)]-6=0

-3×(18+4x-12)-6=0

-3×(6+4x)-6=0

-18-12x-6=0

-24-12x=0

-12x=24

x=-2