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Mathematics 12 Online
OpenStudy (anonymous):

Find x if f(x) = 2x + 7 and f(x) = -1. -4 -3 5

OpenStudy (lncognlto):

Substitute f(x) = -1 in f(x) = 2x + 7, so -1 = 2x + 7. Now what do you get?

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