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G in (-oo:+oo)
G/4 = 3.2 // - 3.2
G/4-3.2 = 0
1/4*G-3.2 = 0 // + 3.2
1/4*G = 3.2 // : 1/4
G = 3.2/1/4
G = 12.8
G = 12.8
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