20.5+3.9t=10.75

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Solution for 20.5+3.9t=10.75 equation: 


Simplifying
20.5 + 3.9t = 10.75

Solving
20.5 + 3.9t = 10.75

Solving for variable 't'.

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

Add '-20.5' to each side of the equation.
20.5 + -20.5 + 3.9t = 10.75 + -20.5

Combine like terms: 20.5 + -20.5 = 0.0
0.0 + 3.9t = 10.75 + -20.5
3.9t = 10.75 + -20.5

Combine like terms: 10.75 + -20.5 = -9.75
3.9t = -9.75

Divide each side by '3.9'.
t = -2.5

Simplifying
t = -2.5

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