y+4.2=0.8(y+4)

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Solution for y+4.2=0.8(y+4) equation: 


Simplifying
y + 4.2 = 0.8(y + 4)

Reorder the terms:
4.2 + y = 0.8(y + 4)

Reorder the terms:
4.2 + y = 0.8(4 + y)
4.2 + y = (4 * 0.8 + y * 0.8)
4.2 + y = (3.2 + 0.8y)

Solving
4.2 + y = 3.2 + 0.8y

Solving for variable 'y'.

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

Add '-0.8y' to each side of the equation.
4.2 + y + -0.8y = 3.2 + 0.8y + -0.8y

Combine like terms: y + -0.8y = 0.2y
4.2 + 0.2y = 3.2 + 0.8y + -0.8y

Combine like terms: 0.8y + -0.8y = 0.0
4.2 + 0.2y = 3.2 + 0.0
4.2 + 0.2y = 3.2

Add '-4.2' to each side of the equation.
4.2 + -4.2 + 0.2y = 3.2 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + 0.2y = 3.2 + -4.2
0.2y = 3.2 + -4.2

Combine like terms: 3.2 + -4.2 = -1
0.2y = -1

Divide each side by '0.2'.
y = -5

Simplifying
y = -5

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