Raymond B. answered • 02/08/21
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5
(2)
Math, microeconomics or criminal justice
1st is equivalent to x-y=3
2nd is equivalent to -x+4y=9
add them
to get 3y = 12
y=12/3 = 4
x=3+4 = 7
Noelia C.
asked • 02/08/21Solve the system of equations 3x-3y=9 and -2x+8y=18 by combining the equations
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