21+4t=89

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Solution for 21+4t=89 equation: 


Simplifying
21 + 4t = 89

Solving
21 + 4t = 89

Solving for variable 't'.

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

Add '-21' to each side of the equation.
21 + -21 + 4t = 89 + -21

Combine like terms: 21 + -21 = 0
0 + 4t = 89 + -21
4t = 89 + -21

Combine like terms: 89 + -21 = 68
4t = 68

Divide each side by '4'.
t = 17

Simplifying
t = 17

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