What is the value of x enter your answer in the box
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A straight line equals 180 degrees.
The two equations when added together make a straight line so needs to equal 180:
10x-20 + 6x +8 = 180
Simplify:
16x - 12 = 180
Add 12 to each side:
16x = 192
Divide both sides by 16:
X = 192 / 16
X = 12