Someone me figure out how to do this.. not just the answer ! you.

R u trying to find for x?

Question 3

The two angles add up to 180.

They are supplementary angles (they form a straight angle).

(3x-10)+(2x+30) = 180

(3x+2x)+(-10+30) = 180

5x+20 = 180

5x+20-20 = 180-20 subtract 20 from both sides

5x = 160

5x/5 = 160/5 divide both sides by 5

x = 32

Question 5

2x+2 = 5x-10

2x+2+10 = 5x-10+10 add 10 to both sides

2x+12 = 5x

2x+12-2x = 5x-2x subtract 2x from both sides

12 = 3x

3x = 12

3x/3 = 12/3 divide both sides by 3

x = 4

step-by-step explanation: