8.1+3.8t-5.6=-7.2

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Solution for 8.1+3.8t-5.6=-7.2 equation: 


Simplifying
8.1 + 3.8t + -5.6 = -7.2

Reorder the terms:
8.1 + -5.6 + 3.8t = -7.2

Combine like terms: 8.1 + -5.6 = 2.5
2.5 + 3.8t = -7.2

Solving
2.5 + 3.8t = -7.2

Solving for variable 't'.

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

Add '-2.5' to each side of the equation.
2.5 + -2.5 + 3.8t = -7.2 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + 3.8t = -7.2 + -2.5
3.8t = -7.2 + -2.5

Combine like terms: -7.2 + -2.5 = -9.7
3.8t = -9.7

Divide each side by '3.8'.
t = -2.552631579

Simplifying
t = -2.552631579

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