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Yaretzi Mills
Mathematics
26 July, 17:23
What is the solution for - x+y=4 and 3x-2y=-7
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Josue Barnett
26 July, 17:44
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To start this, get an equation in terms of one variable - lets choose the first one
-x+y=4 - - - > y=4+x
now we plug this into the second equation
3x-2 (4+x) = - 7
we can now simplify that equation in order to get a numeric value for our x variable
3x-2 (4+x) = - 7 - - - > 3x-8-2x=-7 - - - > x-8=-7 - - - > x=1
now we can plug that value into one of the original equations in order to solve for y
-1+y=4 - - - > y=5
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