Question

Resolva as equações. Com os cálculos

Answer 1

a)4x+4=12
4x=8
x=2
b)15-5x-4x=18
-9x=3
x=3/-9
x=1/-3
c)9x-6x-6=15
3x=9
x=3
d)2,5x-5-1,5x=1
x=6
e)3,5x+8=2x+14
0,5x=6
x=12
f)18x+12-8=-2
18x=-6
x=-6/18
x=-1/3
g)-3x
+15-4x-2=-8
-4x=21
4x=-21
x=-21/4