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Melvina Boyle
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∙ 3y agoThis answer is:
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∙ 14y agoIf 15=-x+8,
then we use the additive property of equality to see that
-x=15-8.
So after subtracting we have
-x=7 or x=-7.
It is always important to check your answer.
15=-(-7)+8
or 15=7+8 which is true.
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