1.8x+1.4y=21

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Solution for 1.8x+1.4y=21 equation: 


Simplifying
1.8x + 1.4y = 21

Solving
1.8x + 1.4y = 21

Solving for variable 'x'.

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

Add '-1.4y' to each side of the equation.
1.8x + 1.4y + -1.4y = 21 + -1.4y

Combine like terms: 1.4y + -1.4y = 0.0
1.8x + 0.0 = 21 + -1.4y
1.8x = 21 + -1.4y

Divide each side by '1.8'.
x = 11.66666667 + -0.7777777778y

Simplifying
x = 11.66666667 + -0.7777777778y

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