Answer:
12 is your answer for x.
Step-by-step explanation:
Note that the two angles create a straight line when added, which would mean the measurement together = 180°
Set the two angles = 180°
10x - 20 + 6x + 8 = 180
Simplify. Combine like terms
(10x + 6x) + (-20 + 8) = 180
16x - 12 = 180
Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First, add 12 to both sides.
16x - 12 (+12) = 180 (+12)
16x = 180 + 12
16x = 192
Divide 16 from both sides to isolate x.
(16x)/16 = (192)/16
x = 192/16
x = 12
12 is your answer for x.
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