21-t=4t+1

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


Simplifying
21 + -1t = 4t + 1

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

Solving
21 + -1t = 1 + 4t

Solving for variable 't'.

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

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

Combine like terms: -1t + -4t = -5t
21 + -5t = 1 + 4t + -4t

Combine like terms: 4t + -4t = 0
21 + -5t = 1 + 0
21 + -5t = 1

Add '-21' to each side of the equation.
21 + -21 + -5t = 1 + -21

Combine like terms: 21 + -21 = 0
0 + -5t = 1 + -21
-5t = 1 + -21

Combine like terms: 1 + -21 = -20
-5t = -20

Divide each side by '-5'.
t = 4

Simplifying
t = 4

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