7x+21y+28=

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Solution for 7x+21y+28= equation:


Simplifying
7x + 21y + 28 = 0

Reorder the terms:
28 + 7x + 21y = 0

Solving
28 + 7x + 21y = 0

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + 7x + -28 + 21y = 0 + -28

Reorder the terms:
28 + -28 + 7x + 21y = 0 + -28

Combine like terms: 28 + -28 = 0
0 + 7x + 21y = 0 + -28
7x + 21y = 0 + -28

Combine like terms: 0 + -28 = -28
7x + 21y = -28

Add '-21y' to each side of the equation.
7x + 21y + -21y = -28 + -21y

Combine like terms: 21y + -21y = 0
7x + 0 = -28 + -21y
7x = -28 + -21y

Divide each side by '7'.
x = -4 + -3y

Simplifying
x = -4 + -3y

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