2x + 5y = 17 , 5x+2y=12 , x-y= ?
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Answer:
Step-by-step explanation:
2x + 5y = 17 ....... (1)
5x + 2y = 12 ....... (2)
(1) × 5 + (2) × ( - 2)
25y - 4y = 85 - 24
21y = 61
y =
2x + = 17
x =
- = -
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