4x+-5y=21

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Solution for 4x+-5y=21 equation: 


Simplifying
4x + -5y = 21

Solving
4x + -5y = 21

Solving for variable 'x'.

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

Add '5y' to each side of the equation.
4x + -5y + 5y = 21 + 5y

Combine like terms: -5y + 5y = 0
4x + 0 = 21 + 5y
4x = 21 + 5y

Divide each side by '4'.
x = 5.25 + 1.25y

Simplifying
x = 5.25 + 1.25y

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