Respuesta :

5x+15=75-25x ( add 25x on both sides )
(5x+25x)+15=75+(-25x+25x)
30x+15=75 (minus 15 on both sides )
30x+(15-15)=75-15
30x=60 (divide both sides by 30 to isolate x by itself)
30x/30=60/30
x=2
AnswerHeros

Answer: 2

Step-by-step explanation:

1.)   5x + 15 = 75 - 25x  

     -5x                 -5x

2.) 15 = 75 - 30x

            -75

3.) -60 = -30x

4.) -60 divide by -30 = 2