SOLUTION: X:Y=7:9, X-12:Y-12=3:5 then Value of X & Y
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Question 764681
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X:Y=7:9, X-12:Y-12=3:5 then Value of X & Y
Answer by
josgarithmetic(39616)
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Those are easier to deal with if rational statements like so:
.
Multiply each equation by its own lowest common denominator to simplify:
9x=7y and 5(x-12)=3(y-12) giving 5x-60=3y-36 giving 5x-3y=-96
The system is then
and
You could continue from here...