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andrey2020 [161]
3 years ago
6

4x+12=-7y -y+12=4x PLS HELP!!!! Addition/ Elimination method

Mathematics
1 answer:
hoa [83]3 years ago
3 0
4×+7y=-12 __ -4x-y=-12 ________ 0x+6y=-24 , so you eleminated by it self 6y/6=-24/6 , you get : y=-4 and then you plug in 4x+7(-4)=-12 , that's your answer 4x-28 =-12 , you divided in both side 4x=-12+28 , 4x=16 , and then x=16/4 =4 , so x=4
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