Question

If m∠1=5x+20 and m∠2=3x+80 find m∠1 .

Answer 1

m∠1= 120

Explanation:

5x+20 = 3x+80

subtract 3 from 5x and 3x to cancel out 3x

2x+20=80

subtract 20 from 20 and 80 to get 2x isolated

2x=40

divide each side by 2 to get x=20

Now plug in 20 for x in angle 1:

5(20)+20= 120

I hope this helps!