7x+21y=43

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Solution for 7x+21y=43 equation: 


Simplifying
7x + 21y = 43

Solving
7x + 21y = 43

Solving for variable 'x'.

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

Add '-21y' to each side of the equation.
7x + 21y + -21y = 43 + -21y

Combine like terms: 21y + -21y = 0
7x + 0 = 43 + -21y
7x = 43 + -21y

Divide each side by '7'.
x = 6.142857143 + -3y

Simplifying
x = 6.142857143 + -3y

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