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22-10-2020
Mathematics

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Difference between (-7x+7) - (-8x-9)

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22-10-2020

Answer:

x + 16

Step-by-step explanation:

= (-7x +7) - (-8x-9)

= -7x+7+8x+9

*[positive because negative (outside the bracket) multiplied by negative (inside the bracket) will be positive.]

= -7x+8x+7+9 (rearranging like terms together)

= x + 16

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