6y-99=4y-57

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Solution for 6y-99=4y-57 equation:


Simplifying
6y + -99 = 4y + -57

Reorder the terms:
-99 + 6y = 4y + -57

Reorder the terms:
-99 + 6y = -57 + 4y

Solving
-99 + 6y = -57 + 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
-99 + 6y + -4y = -57 + 4y + -4y

Combine like terms: 6y + -4y = 2y
-99 + 2y = -57 + 4y + -4y

Combine like terms: 4y + -4y = 0
-99 + 2y = -57 + 0
-99 + 2y = -57

Add '99' to each side of the equation.
-99 + 99 + 2y = -57 + 99

Combine like terms: -99 + 99 = 0
0 + 2y = -57 + 99
2y = -57 + 99

Combine like terms: -57 + 99 = 42
2y = 42

Divide each side by '2'.
y = 21

Simplifying
y = 21

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