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22-05-2017
Mathematics

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22-05-2017

The angles make a linear pair.
15x + 4 + 10x + 1 = 180
Combine like terms
25x + 5 = 180
Subtract 5 from both sides
25x = 175
Divide both sides by 25.
x = 7
To find the angle measurements plug 7 back in to each expression.
15(7)+4= 109
10(7) +1 = 71

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