7x+21=9y

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Solution for 7x+21=9y equation:


Simplifying
7x + 21 = 9y

Reorder the terms:
21 + 7x = 9y

Solving
21 + 7x = 9y

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 7x = -21 + 9y

Combine like terms: 21 + -21 = 0
0 + 7x = -21 + 9y
7x = -21 + 9y

Divide each side by '7'.
x = -3 + 1.285714286y

Simplifying
x = -3 + 1.285714286y

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