3x+6+5y=21

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Solution for 3x+6+5y=21 equation: 


Simplifying
3x + 6 + 5y = 21

Reorder the terms:
6 + 3x + 5y = 21

Solving
6 + 3x + 5y = 21

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + 3x + -6 + 5y = 21 + -6

Reorder the terms:
6 + -6 + 3x + 5y = 21 + -6

Combine like terms: 6 + -6 = 0
0 + 3x + 5y = 21 + -6
3x + 5y = 21 + -6

Combine like terms: 21 + -6 = 15
3x + 5y = 15

Add '-5y' to each side of the equation.
3x + 5y + -5y = 15 + -5y

Combine like terms: 5y + -5y = 0
3x + 0 = 15 + -5y
3x = 15 + -5y

Divide each side by '3'.
x = 5 + -1.666666667y

Simplifying
x = 5 + -1.666666667y

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