4y=21-3y

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Solution for 4y=21-3y equation: 


Simplifying
4y = 21 + -3y

Solving
4y = 21 + -3y

Solving for variable 'y'.

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

Add '3y' to each side of the equation.
4y + 3y = 21 + -3y + 3y

Combine like terms: 4y + 3y = 7y
7y = 21 + -3y + 3y

Combine like terms: -3y + 3y = 0
7y = 21 + 0
7y = 21

Divide each side by '7'.
y = 3

Simplifying
y = 3

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