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g in (-oo:+oo)
(3/7)*(4*g+8) = 2*g // - 2*g
(3/7)*(4*g+8)-(2*g) = 0
(3/7)*(4*g+8)-2*g = 0
3/7*(4*g+8)-2*g = 0
3/7*(4*g+8)-2*g = 0
24/7-2/7*g = 0
24/7-2/7*g = 0
24/7-2/7*g = 0 // - 24/7
-2/7*g = -24/7 // : -2/7
g = -24/7/(-2/7)
g = 12
g = 12
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