11x+7y=10 and 25x+6y=-7 elimination method
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multiply first equation by 6 n multiply 2nd equation by 7
66x+42y=60
175x+42y=-49
subtract eq.2 by eq.1
109x = 109
x = 1
put x = 1
put the value of X in eq 1
42y = -6
y = -6/42
y= ,-1/7
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