Answer:
[tex]x = 1[/tex]
Step-by-step explanation:
1) Expand.
[tex]6x + 9 + 4x + 2 = 21[/tex]
2) Simplify 6x + 9 + 4x + 2 to 10x + 11.
[tex]10x + 10 = 21[/tex]
3) Subtract 11 from both sides.
[tex]10x = 21 - 11[/tex]
4) Simplify 21 - 11 to 10.
[tex]10x = 10[/tex]
5) Divide both sides by 10.
[tex]x = 1[/tex]
Therefor, the answer is x = 1.
