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Describe and correct the error in solving this equation -2(7-y)+4=-4 -14-2y+4=-4 -10-2y=-4 -2y=6 y=-3 please show work I don't know how to get the answer
asked
Aug 17, 2015
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Describe and correct the error in solving this equation
-2(7-y)+4=-4
-14-2y+4=-4
-10-2y=-4
-2y=6
y=-3
please show work I don't know how to get the answer
Mathematics
middle-school
Matei Suica
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Matei Suica
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shouldn't it be
-2(7-y)+4=-4
-14+2y+4=-4
-10+2y=-4
2y=-14
y=-7
I think
F Lekschas
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Aug 18, 2015
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F Lekschas
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4
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it's wrong because you multiplied wrong in the first step.
here's what went wrong,
-2(7-y)+4=-4
-14+2y+4=-4 <--- multiplying two negatives equals a positive.
Junio
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Aug 23, 2015
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Junio
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