0.4y+0.8(4)=5(y+4)

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Solution for 0.4y+0.8(4)=5(y+4) equation: 


Simplifying
0.4y + 0.8(4) = 5(y + 4)

Multiply 0.8 * 4
0.4y + 3.2 = 5(y + 4)

Reorder the terms:
3.2 + 0.4y = 5(y + 4)

Reorder the terms:
3.2 + 0.4y = 5(4 + y)
3.2 + 0.4y = (4 * 5 + y * 5)
3.2 + 0.4y = (20 + 5y)

Solving
3.2 + 0.4y = 20 + 5y

Solving for variable 'y'.

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

Add '-5y' to each side of the equation.
3.2 + 0.4y + -5y = 20 + 5y + -5y

Combine like terms: 0.4y + -5y = -4.6y
3.2 + -4.6y = 20 + 5y + -5y

Combine like terms: 5y + -5y = 0
3.2 + -4.6y = 20 + 0
3.2 + -4.6y = 20

Add '-3.2' to each side of the equation.
3.2 + -3.2 + -4.6y = 20 + -3.2

Combine like terms: 3.2 + -3.2 = 0.0
0.0 + -4.6y = 20 + -3.2
-4.6y = 20 + -3.2

Combine like terms: 20 + -3.2 = 16.8
-4.6y = 16.8

Divide each side by '-4.6'.
y = -3.652173913

Simplifying
y = -3.652173913

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