Question

Resolva as equações de 1º  grau abaixo:
A)2(m+4)+8=3+M

B)5x+14+2x=2x+108-x

c)14x+10x=25+5

D)15x+30x-20=10x

Answer 1

A ) 2 (m+4)+8=3+M
2m+8+8=3+m
2m+16=3+m
2m=3+m-16
2m-m=3-16
m=-13

B)5x+14+2x=2x+108-x
5x+2x=2x+108-x-14
5x+2x-2x+x=108-14
6x=94
x=94/6
x= 16

C)14x+10x=25+5
24x=30
x=30/24
x=1,25

D)15x+30x-20=10x
15x+30x=10x+20
15x+30x-10x=20
35x=20
x=20/35
x=0,6