21t-7=5t+13

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Solution for 21t-7=5t+13 equation:


Simplifying
21t + -7 = 5t + 13

Reorder the terms:
-7 + 21t = 5t + 13

Reorder the terms:
-7 + 21t = 13 + 5t

Solving
-7 + 21t = 13 + 5t

Solving for variable 't'.

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

Add '-5t' to each side of the equation.
-7 + 21t + -5t = 13 + 5t + -5t

Combine like terms: 21t + -5t = 16t
-7 + 16t = 13 + 5t + -5t

Combine like terms: 5t + -5t = 0
-7 + 16t = 13 + 0
-7 + 16t = 13

Add '7' to each side of the equation.
-7 + 7 + 16t = 13 + 7

Combine like terms: -7 + 7 = 0
0 + 16t = 13 + 7
16t = 13 + 7

Combine like terms: 13 + 7 = 20
16t = 20

Divide each side by '16'.
t = 1.25

Simplifying
t = 1.25

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