DE LA PUNCTUL D
PLSSS DAU COROANA

d) -2² * 7³ = 7²*x
49x = 4*343
x = 1372:49
x = 28
e) -2² * 3 = -6x
4*3 = -6x
-6x = 12
x = -2
f) (2+3)x = -15
5x = -15
x = -3
g) (79-84)x = -10
-5x = -10
x = 2