suspiciousbacon suspiciousbacon

05-01-2017
Mathematics

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Which expression is equivalent to (-4-x)-(3y-9x)

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Аноним Аноним

05-01-2017

(-4-x)-(3y-9x)
= -4 - x - 3y + 9x
= 8x - 3y - 4

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itshelenyall itshelenyall

05-01-2017

Basically, you just need to simplify it first, then combine like terms.
(-4-x)-(3y-9x)
= -4 - x - (3y - 9x)
= -4 - x + -1(3y) + -1 (-9x)
= -4 + -x + -1(3y) + -1(-9x)
= -4 + -x + -3y + 9x
= (-x + -9x) + (-3y) + (-4)
= 8x + (-3y) + (-4)
= 8x - 3y - 4

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