Question

X+3Y=66
X+5Y=102

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Answer 1

x = 66 - 3y

x = 102 - 5y

66 - 3y = 102 - 5y

-3y + 5y = 102 - 66

2y = 36

y = 18

X = 66 - 3(18)

x = 66 - 54

x = 12