If FG = x + 1, GH = 2x, and FH = 4, what is FG?

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If FG = x + 1, GH = 2x, and FH = 4, what is FG?

FG + GH = FH due to segment addition
x + 1 + 2x = 4

Typing this equation into our math engine, we get:
x = 1

FG = 1 + 1
FG = 2