2y-.8=3.9

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Solution for 2y-.8=3.9 equation: 


Simplifying
2y + -0.8 = 3.9

Reorder the terms:
-0.8 + 2y = 3.9

Solving
-0.8 + 2y = 3.9

Solving for variable 'y'.

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

Add '0.8' to each side of the equation.
-0.8 + 0.8 + 2y = 3.9 + 0.8

Combine like terms: -0.8 + 0.8 = 0.0
0.0 + 2y = 3.9 + 0.8
2y = 3.9 + 0.8

Combine like terms: 3.9 + 0.8 = 4.7
2y = 4.7

Divide each side by '2'.
y = 2.35

Simplifying
y = 2.35

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