3X+11y+5z=90

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Solution for 3X+11y+5z=90 equation: 


Simplifying
3X + 11y + 5z = 90

Solving
3X + 11y + 5z = 90

Solving for variable 'X'.

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

Add '-11y' to each side of the equation.
3X + 11y + -11y + 5z = 90 + -11y

Combine like terms: 11y + -11y = 0
3X + 0 + 5z = 90 + -11y
3X + 5z = 90 + -11y

Add '-5z' to each side of the equation.
3X + 5z + -5z = 90 + -11y + -5z

Combine like terms: 5z + -5z = 0
3X + 0 = 90 + -11y + -5z
3X = 90 + -11y + -5z

Divide each side by '3'.
X = 30 + -3.666666667y + -1.666666667z

Simplifying
X = 30 + -3.666666667y + -1.666666667z

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