Answer:
x=30
Step-by-step explanation:
4x+2x=180
6x=180
Solution,
[tex]4 x + 2x = 180(sum \: of \: supplementary \: angles) \\ or \: 6x = 180 \\ or \: x = \frac{180}{6} \\ x = 30[/tex]
hope this helps...
Good luck on your assignment...
