-3t+3=-7t-21

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Solution for -3t+3=-7t-21 equation: 


t in (-oo:+oo)

3-3*t = -7*t-21 // + -7*t-21

3-3*t-(-7*t)+21 = 0

7*t-3*t+3+21 = 0

4*t+24 = 0 // - 24

4*t = -24 // : 4

t = -24/4

t = -6

t = -6

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