4t-21=-9+7t

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Solution for 4t-21=-9+7t equation:


Simplifying
4t + -21 = -9 + 7t

Reorder the terms:
-21 + 4t = -9 + 7t

Solving
-21 + 4t = -9 + 7t

Solving for variable 't'.

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

Add '-7t' to each side of the equation.
-21 + 4t + -7t = -9 + 7t + -7t

Combine like terms: 4t + -7t = -3t
-21 + -3t = -9 + 7t + -7t

Combine like terms: 7t + -7t = 0
-21 + -3t = -9 + 0
-21 + -3t = -9

Add '21' to each side of the equation.
-21 + 21 + -3t = -9 + 21

Combine like terms: -21 + 21 = 0
0 + -3t = -9 + 21
-3t = -9 + 21

Combine like terms: -9 + 21 = 12
-3t = 12

Divide each side by '-3'.
t = -4

Simplifying
t = -4

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