Question

resolva as equações
a)5x+7=4x+10
b)4x-10=2x+2
c)4x-7=8x-2

Answer 1

a) 5x+7=4x+10
5x-4x=10-7
x=10-7
x=3

b) 4x-2x=2+10
2x=12
x=12/2
x=6

c) 4x-7=8x-2
4x-8x=-2+7
-4x=5 .(-1)
4x=-5
x=-5/4