1/2t-4(2+t)=20

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Solution for 1/2t-4(2+t)=20 equation: 


t in (-oo:+oo)

(1/2)*t-(4*(t+2)) = 20 // - 20

(1/2)*t-(4*(t+2))-20 = 0

(1/2)*t-4*(t+2)-20 = 0

t/2-4*(t+2)-20 = 0

(-4*2*(t+2))/2+t/2+(-20*2)/2 = 0

t-4*2*(t+2)-20*2 = 0

-7*t-40-16 = 0

-7*t-56 = 0

(-7*t-56)/2 = 0

(-7*t-56)/2 = 0 // * 2

-7*t-56 = 0

-7*t-56 = 0 // + 56

-7*t = 56 // : -7

t = 56/(-7)

t = -8

t = -8

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