2t+1=21

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Solution for 2t+1=21 equation: 


t in (-oo:+oo)

2*t+1 = 21 // - 21

2*t-21+1 = 0

2*t-20 = 0 // + 20

2*t = 20 // : 2

t = 20/2

t = 10

t = 10

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