ladyivory26
ladyivory26
22-05-2016
Mathematics
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-x+y=4 3x-2y=-7 substitution
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BreannaK
BreannaK
22-05-2016
-x+y=4 add x to both sides to get y=x+4 Plug x+4 into the equation for y to get 3x-2(x+4)=-7 Distribute to get 3x-2x-8=-7 Add 8 to both sides to get 3x-2x=1 Subtract 3x-2x to get x=1 the answer is 1
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