Question

What is the value of x?

Answer 1

x =12

Explanation:

The two angles form a straight line. This means they are supplementary or add to 180 degrees.

10x-20 + 6x+8 = 180

Combine like terms

16x-12 =180

Add 12 to each side

16x -12+12 = 180+12

16x = 192

Divide by 16

16x/16 = 192/16

x =12

Answer 2

12 is your answer for x.

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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