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Sagot :
Answer:
1st option
Step-by-step explanation:
7x + 7 and 112 are vertically opposite angles and are congruent , then
7x + 7 = 112 ( subtract 7 from both sides )
7x = 105 ( divide both sides by 7 )
x = 15
4y and 112 are adjacent angles and sum to 180° , that is
4y + 112 = 180 ( subtract 112 from both sides )
4y = 68 ( divide both sides by 4 )
y = 17
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