x+6+.5y=21

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


Simplifying
x + 6 + 0.5y = 21

Reorder the terms:
6 + x + 0.5y = 21

Solving
6 + x + 0.5y = 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 + x + -6 + 0.5y = 21 + -6

Reorder the terms:
6 + -6 + x + 0.5y = 21 + -6

Combine like terms: 6 + -6 = 0
0 + x + 0.5y = 21 + -6
x + 0.5y = 21 + -6

Combine like terms: 21 + -6 = 15
x + 0.5y = 15

Add '-0.5y' to each side of the equation.
x + 0.5y + -0.5y = 15 + -0.5y

Combine like terms: 0.5y + -0.5y = 0.0
x + 0.0 = 15 + -0.5y
x = 15 + -0.5y

Simplifying
x = 15 + -0.5y

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