7x-3y-9=30

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Solution for 7x-3y-9=30 equation:


Simplifying
7x + -3y + -9 = 30

Reorder the terms:
-9 + 7x + -3y = 30

Solving
-9 + 7x + -3y = 30

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 7x + 9 + -3y = 30 + 9

Reorder the terms:
-9 + 9 + 7x + -3y = 30 + 9

Combine like terms: -9 + 9 = 0
0 + 7x + -3y = 30 + 9
7x + -3y = 30 + 9

Combine like terms: 30 + 9 = 39
7x + -3y = 39

Add '3y' to each side of the equation.
7x + -3y + 3y = 39 + 3y

Combine like terms: -3y + 3y = 0
7x + 0 = 39 + 3y
7x = 39 + 3y

Divide each side by '7'.
x = 5.571428571 + 0.4285714286y

Simplifying
x = 5.571428571 + 0.4285714286y

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