Answer:
Explanation:
Note that it is a triangle's measurement = 180°
You are solving for x. Set all the angles = 180°
73 + 8x + 4 + 8y - 7 = 180
Simplify. Combine like terms
73 + 4 - 7 + 8x + 8y = 180
70 + 8x + 8y = 180
Solve for x. Subtract 8y and 70 from both sides
8x + 8y (-8y) + 70 (-70) = 180 (-8y) - (70)
8x = 180 - 70 - 8y
8x = 110 - 8y
Isolate the x. Divide 8 from both sides
(8x)/8 = (110 - 8y)/8
x = 13.75 - y
x = 13.75 - y is your equation you will use to solve for x when you know what y is.
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