3x+21=5y

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Solution for 3x+21=5y equation: 


Simplifying
3x + 21 = 5y

Reorder the terms:
21 + 3x = 5y

Solving
21 + 3x = 5y

Solving for variable 'x'.

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

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

Combine like terms: 21 + -21 = 0
0 + 3x = -21 + 5y
3x = -21 + 5y

Divide each side by '3'.
x = -7 + 1.666666667y

Simplifying
x = -7 + 1.666666667y

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