Question

resolva as equações:
7x+5=2x+15

Answer 1

7x + 5 = 2x + 15
7x - 2x = 15 - 5
5x = 10
x = 10/5
x = 2

Answer 2

x=2 pois,

7x-2x=15-5

5x=10

x=10/5

x=2

espero ter ajudado :)