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22-07-2019
Mathematics

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Find x if f(x) = 2x + 7 and f(x) = -1

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musiclover10045 musiclover10045

22-07-2019

f(x) = 2x + 7 and f(x) = -1

Replace f(x) with -1:

-1 = 2x +7

Subtract 7 from both sides:

-8 = 2x

Divide both sides by 2:

x = -8 /2

x = -4

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