7.8+t=21

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Solution for 7.8+t=21 equation: 


Simplifying
7.8 + t = 21

Solving
7.8 + t = 21

Solving for variable 't'.

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

Add '-7.8' to each side of the equation.
7.8 + -7.8 + t = 21 + -7.8

Combine like terms: 7.8 + -7.8 = 0.0
0.0 + t = 21 + -7.8
t = 21 + -7.8

Combine like terms: 21 + -7.8 = 13.2
t = 13.2

Simplifying
t = 13.2

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