Answer:
[tex]no \: solution[/tex]
Step-by-step explanation:
1) Expand.
[tex]7a + 5a + 15 = 8a + 4a+ 8[/tex]
2) Simplify 7a + 5a + 15 to 12a + 15.
[tex]12a + 15 = 8a + 4a+ 8[/tex]
3) Simplify 8a + 4a + 8 to 12a + 8.
[tex]12a + 15 = 12a + 8[/tex]
4) Cancle 12a from both sides.
[tex]15 = 8[/tex]
5) Since 15 = 8 is false, there's no solution.
[tex]no \: solution[/tex]
Therefor, this equation has no solution.
