10-3y=21-5y

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Solution for 10-3y=21-5y equation: 


Simplifying
10 + -3y = 21 + -5y

Solving
10 + -3y = 21 + -5y

Solving for variable 'y'.

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

Add '5y' to each side of the equation.
10 + -3y + 5y = 21 + -5y + 5y

Combine like terms: -3y + 5y = 2y
10 + 2y = 21 + -5y + 5y

Combine like terms: -5y + 5y = 0
10 + 2y = 21 + 0
10 + 2y = 21

Add '-10' to each side of the equation.
10 + -10 + 2y = 21 + -10

Combine like terms: 10 + -10 = 0
0 + 2y = 21 + -10
2y = 21 + -10

Combine like terms: 21 + -10 = 11
2y = 11

Divide each side by '2'.
y = 5.5

Simplifying
y = 5.5

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