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Mathematics
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Solve the system of equations. 3x + 4y = 23 5x + y = 27
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lets multiply the bottom equation by -4 to eliminate y when we add the equations: 3x+4y=23 -20x-4y=-108 add them -17x=-85 x=5 plug back in and y=2
for solving these type of questions try eliminating a variablbe an solve for the other : multiply the 2nd equation by -4 to eliminate y when we add the equations: 3x+4y=23 -20x-4y=-108 add them -17x=-85 x=5 and so y=2
multiply up by 1 and down by 4 3x+4y=23 20x+4y=108 then you subtract -17x=-85 x=5 substitute for y
ok, so we all agree haha
:D yea we do :D
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So are there 2 answers? y and x?
yes , since u where asked to solve an equation containing 2 unknows x and y, u will finally find 2 answers .
Ohh okay.
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