4y-21+6y=9y-13

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Solution for 4y-21+6y=9y-13 equation:


Simplifying
4y + -21 + 6y = 9y + -13

Reorder the terms:
-21 + 4y + 6y = 9y + -13

Combine like terms: 4y + 6y = 10y
-21 + 10y = 9y + -13

Reorder the terms:
-21 + 10y = -13 + 9y

Solving
-21 + 10y = -13 + 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.
-21 + 10y + -9y = -13 + 9y + -9y

Combine like terms: 10y + -9y = 1y
-21 + 1y = -13 + 9y + -9y

Combine like terms: 9y + -9y = 0
-21 + 1y = -13 + 0
-21 + 1y = -13

Add '21' to each side of the equation.
-21 + 21 + 1y = -13 + 21

Combine like terms: -21 + 21 = 0
0 + 1y = -13 + 21
1y = -13 + 21

Combine like terms: -13 + 21 = 8
1y = 8

Divide each side by '1'.
y = 8

Simplifying
y = 8

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