in each figure, calculate the value of x.
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in each figure, calculate the value of x.
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Answer: x=25
Step-by-step explanation:
To find the value of x you need to solve simultaneous equation.
75+x+y = 180 (y is unkown angle)
4x+y=180 y = 180-4x
75+x+180-4x=180
75+180-180=4x-x
75=3x
x=25