(3)x+8y=28

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Solution for (3)x+8y=28 equation: 


Simplifying
(3) * x + 8y = 28

Solving
3x + 8y = 28

Solving for variable 'x'.

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

Add '-8y' to each side of the equation.
3x + 8y + -8y = 28 + -8y

Combine like terms: 8y + -8y = 0
3x + 0 = 28 + -8y
3x = 28 + -8y

Divide each side by '3'.
x = 9.333333333 + -2.666666667y

Simplifying
x = 9.333333333 + -2.666666667y

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