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OpenStudy (anonymous):
solve each equation system by the addition method -2x+3y=-7 3x+y=16
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OpenStudy (anonymous):
-2x+3y=-7 ->eqn1 3x+y=16 ->eqn2 multiple equation 2 by 3
OpenStudy (anonymous):
i.e 3x*3 + y*3 = 16*3
OpenStudy (anonymous):
that is 9x + 3y = 48
OpenStudy (anonymous):
9x + 3y = 48 -> eqn 3
OpenStudy (anonymous):
add eqn 1 & eqn 3
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OpenStudy (anonymous):
-2x+3y=-7 9x+3y=48 add
OpenStudy (anonymous):
|dw:1424146850781:dw|
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