-7.2-6y-8.9-4y=-9y+3.1

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Solution for -7.2-6y-8.9-4y=-9y+3.1 equation: 


Simplifying
-7.2 + -6y + -8.9 + -4y = -9y + 3.1

Reorder the terms:
-7.2 + -8.9 + -6y + -4y = -9y + 3.1

Combine like terms: -7.2 + -8.9 = -16.1
-16.1 + -6y + -4y = -9y + 3.1

Combine like terms: -6y + -4y = -10y
-16.1 + -10y = -9y + 3.1

Reorder the terms:
-16.1 + -10y = 3.1 + -9y

Solving
-16.1 + -10y = 3.1 + -9y

Solving for variable 'y'.

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

Add '9y' to each side of the equation.
-16.1 + -10y + 9y = 3.1 + -9y + 9y

Combine like terms: -10y + 9y = -1y
-16.1 + -1y = 3.1 + -9y + 9y

Combine like terms: -9y + 9y = 0
-16.1 + -1y = 3.1 + 0
-16.1 + -1y = 3.1

Add '16.1' to each side of the equation.
-16.1 + 16.1 + -1y = 3.1 + 16.1

Combine like terms: -16.1 + 16.1 = 0.0
0.0 + -1y = 3.1 + 16.1
-1y = 3.1 + 16.1

Combine like terms: 3.1 + 16.1 = 19.2
-1y = 19.2

Divide each side by '-1'.
y = -19.2

Simplifying
y = -19.2

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