2/5t+21=15

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Solution for 2/5t+21=15 equation: 


t in (-oo:+oo)

(2/5)*t+21 = 15 // - 15

(2/5)*t-15+21 = 0

2/5*t+6 = 0 // - 6

2/5*t = -6 // : 2/5

t = -6/2/5

t = -15

t = -15

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