Answer:
or 
<u>Simplify the equation to the form</u>
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<u>Move all terms containing x to the left and all other terms to the right</u>
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<u>Simplify left and right side of the equation</u>
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<u>Divide both sides of the equation by 10 to get x</u>
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or 
Answer:
x=40
Step-by-step explanation:
The sum of the angles of a triangle add to 180
x+102+38 = 180
Combine like terms
x + 140 = 180
Subtract 140 from each side
x+140-140 = 180-140
x = 40
Answer:
10%
Step-by-step explanation: