Question

Resolva as seguintes equações:

a. 2m – (3 – m) = 0
Resp.




b. 4a – 6 + 2a = a – 7
Resp.


c. 2(x + 5) – 3 (2x + 6) = 0
Resp.

Answer 1

a) 2m-(3-m)=0
2m-3+m=0
2m +m=3
3m=3
m=3/3
m=1


b)4a-6+2a=a-7
4a+2a-a=-7+6
5a=-1
a=- 1/5


c)2(x+5)-3(2x+6)=0
2x+10-6x-18=0
2x-6x=18-10
-4x=8
x=- 8/4
x=-2

Espero ter ajudado