Answer:
Okay, so. What I'd do is this.
[tex](5x+3)+(x+3)=180[/tex]
Then I'd combine like terms.
So:
[tex](5x+3)+(x+3)=180\\ 6x+6=180[/tex]
Once you've got 6x, you subtract 6 from 180.
[tex](5x+3)+(x+3)=180\\ 6x+6=180\\6x=174[/tex]
Now all that's left to do is divide each side by 6 to get x.
X should be 29.
Step-by-step explanation:
[tex](5x+3)+(x+3)=180[/tex]
You know that adding the equations will give you 180 because you know they're supplementary.
