8x+7-3=-20 solve for equation

What is provided won't really end up being an equation... however. you can just solve for x if you wanted

8x+7-3=-20

8x+4=-20

8x=-24

x=-3

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

a

step-by-step explanation:

a