0.4y+0.05(4-y)=1.25

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Solution for 0.4y+0.05(4-y)=1.25 equation: 


Simplifying
0.4y + 0.05(4 + -1y) = 1.25
0.4y + (4 * 0.05 + -1y * 0.05) = 1.25
0.4y + (0.2 + -0.05y) = 1.25

Reorder the terms:
0.2 + 0.4y + -0.05y = 1.25

Combine like terms: 0.4y + -0.05y = 0.35y
0.2 + 0.35y = 1.25

Solving
0.2 + 0.35y = 1.25

Solving for variable 'y'.

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

Add '-0.2' to each side of the equation.
0.2 + -0.2 + 0.35y = 1.25 + -0.2

Combine like terms: 0.2 + -0.2 = 0.0
0.0 + 0.35y = 1.25 + -0.2
0.35y = 1.25 + -0.2

Combine like terms: 1.25 + -0.2 = 1.05
0.35y = 1.05

Divide each side by '0.35'.
y = 3

Simplifying
y = 3

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