0.4=0.8t+0.9

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Solution for 0.4=0.8t+0.9 equation: 


Simplifying
0.4 = 0.8t + 0.9

Reorder the terms:
0.4 = 0.9 + 0.8t

Solving
0.4 = 0.9 + 0.8t

Solving for variable 't'.

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

Add '-0.8t' to each side of the equation.
0.4 + -0.8t = 0.9 + 0.8t + -0.8t

Combine like terms: 0.8t + -0.8t = 0.0
0.4 + -0.8t = 0.9 + 0.0
0.4 + -0.8t = 0.9

Add '-0.4' to each side of the equation.
0.4 + -0.4 + -0.8t = 0.9 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + -0.8t = 0.9 + -0.4
-0.8t = 0.9 + -0.4

Combine like terms: 0.9 + -0.4 = 0.5
-0.8t = 0.5

Divide each side by '-0.8'.
t = -0.625

Simplifying
t = -0.625

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