t+1-4t+8=21-20

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Solution for t+1-4t+8=21-20 equation: 


Simplifying
t + 1 + -4t + 8 = 21 + -20

Reorder the terms:
1 + 8 + t + -4t = 21 + -20

Combine like terms: 1 + 8 = 9
9 + t + -4t = 21 + -20

Combine like terms: t + -4t = -3t
9 + -3t = 21 + -20

Combine like terms: 21 + -20 = 1
9 + -3t = 1

Solving
9 + -3t = 1

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Add '-9' to each side of the equation.
9 + -9 + -3t = 1 + -9

Combine like terms: 9 + -9 = 0
0 + -3t = 1 + -9
-3t = 1 + -9

Combine like terms: 1 + -9 = -8
-3t = -8

Divide each side by '-3'.
t = 2.666666667

Simplifying
t = 2.666666667

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