2.5-0.4y=6.4

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Solution for 2.5-0.4y=6.4 equation: 


Simplifying
2.5 + -0.4y = 6.4

Solving
2.5 + -0.4y = 6.4

Solving for variable 'y'.

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

Add '-2.5' to each side of the equation.
2.5 + -2.5 + -0.4y = 6.4 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + -0.4y = 6.4 + -2.5
-0.4y = 6.4 + -2.5

Combine like terms: 6.4 + -2.5 = 3.9
-0.4y = 3.9

Divide each side by '-0.4'.
y = -9.75

Simplifying
y = -9.75

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