How do you find what x equals step by step?

x=7

Step-by-step explanation:

The angles will always add up to 180.

Subtract 76 from 180, giving you 104

So now, your other two angles when added together equals 104.

104=5x+6+8x+7

Add your like terms, so add 5x and 8x to give you 13x, and add 6 and 7 to give you 13. Subtract 13 from both sides, leaving you with 91=13x

Divide 13 from both sides, giving you 7=x

Now plug in the 7 for the x for the original expressions. So 5x+6= 5×7+6

5×7=35+6=41

8x+7=8×7+7

8×7=56+7

56+7=63

answer: options

step-by-step explanation: