4t-21=t+12

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Solution for 4t-21=t+12 equation:


Simplifying
4t + -21 = t + 12

Reorder the terms:
-21 + 4t = t + 12

Reorder the terms:
-21 + 4t = 12 + t

Solving
-21 + 4t = 12 + t

Solving for variable 't'.

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

Add '-1t' to each side of the equation.
-21 + 4t + -1t = 12 + t + -1t

Combine like terms: 4t + -1t = 3t
-21 + 3t = 12 + t + -1t

Combine like terms: t + -1t = 0
-21 + 3t = 12 + 0
-21 + 3t = 12

Add '21' to each side of the equation.
-21 + 21 + 3t = 12 + 21

Combine like terms: -21 + 21 = 0
0 + 3t = 12 + 21
3t = 12 + 21

Combine like terms: 12 + 21 = 33
3t = 33

Divide each side by '3'.
t = 11

Simplifying
t = 11

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