Question

resolva 7x-4=3+x e 3a-1a=34

Answer 1

7x - 4 = 3 + x
7x - x = 3 + 4
6x = 7
x = 7/6

3a - 1a = 34
2a = 34
a = 34/2
a = 17

Answer 2

7x - x= 3+4
6x=7
x=7/6

3a-1a=34
2a=34
a=34/2
a=17

Espero ter ajudado!!!!