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First arrange this simultaneous equation in the form of:
4x+5y = 33
4x-2y = -2
Subtract the bottom equation from the top equation remembering that a - - is equal to a +:
7y = 35
Divide both sides by 7 to find the value of y:
y = 5
Substitute the value of y into the original equations to find the value of x:
So: x = 2 and y = 5
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