T/3+21=15

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Solution for T/3+21=15 equation: 


T in (-oo:+oo)

T/3+21 = 15 // - 15

T/3-15+21 = 0

1/3*T+6 = 0 // - 6

1/3*T = -6 // : 1/3

T = -6/1/3

T = -18

T = -18

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