13y-9y-5=78.12

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Solution for 13y-9y-5=78.12 equation:


Simplifying
13y + -9y + -5 = 78.12

Reorder the terms:
-5 + 13y + -9y = 78.12

Combine like terms: 13y + -9y = 4y
-5 + 4y = 78.12

Solving
-5 + 4y = 78.12

Solving for variable 'y'.

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

Add '5' to each side of the equation.
-5 + 5 + 4y = 78.12 + 5

Combine like terms: -5 + 5 = 0
0 + 4y = 78.12 + 5
4y = 78.12 + 5

Combine like terms: 78.12 + 5 = 83.12
4y = 83.12

Divide each side by '4'.
y = 20.78

Simplifying
y = 20.78

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