Răspuns:
a 7x-14=0
7x=-14
x=-2
e.2x+4=-10
2x=6
x=3
b. 4x+12=0
4x=-12
x=-3
C. -9x+27=0
-9x=-27
d.-4x-36=0
-4x=36
x=-9
f.10=7x-4
7x=6
x=7/6
g. 6=4x-2
4x=4 x=1