7x+21y-7=

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Solution for 7x+21y-7= equation:


Simplifying
7x + 21y + -7 = 0

Reorder the terms:
-7 + 7x + 21y = 0

Solving
-7 + 7x + 21y = 0

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7x + 7 + 21y = 0 + 7

Reorder the terms:
-7 + 7 + 7x + 21y = 0 + 7

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

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

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

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

Divide each side by '7'.
x = 1 + -3y

Simplifying
x = 1 + -3y

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