2t+1=-21 - solution

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Solution for 2t+1=-21 equation:

t in (-oo:+oo)

2*t+1 = -21 // + 21

2*t+1+21 = 0

2*t+22 = 0 // - 22

2*t = -22 // : 2

t = -22/2

t = -11

t = -11

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