t-3.9=4

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Solution for t-3.9=4 equation: 


Simplifying
t + -3.9 = 4

Reorder the terms:
-3.9 + t = 4

Solving
-3.9 + t = 4

Solving for variable 't'.

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

Add '3.9' to each side of the equation.
-3.9 + 3.9 + t = 4 + 3.9

Combine like terms: -3.9 + 3.9 = 0.0
0.0 + t = 4 + 3.9
t = 4 + 3.9

Combine like terms: 4 + 3.9 = 7.9
t = 7.9

Simplifying
t = 7.9

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