4x-7y-21=0

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Solution for 4x-7y-21=0 equation:


Simplifying
4x + -7y + -21 = 0

Reorder the terms:
-21 + 4x + -7y = 0

Solving
-21 + 4x + -7y = 0

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 + 4x + 21 + -7y = 0 + 21

Reorder the terms:
-21 + 21 + 4x + -7y = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 4x + -7y = 0 + 21
4x + -7y = 0 + 21

Combine like terms: 0 + 21 = 21
4x + -7y = 21

Add '7y' to each side of the equation.
4x + -7y + 7y = 21 + 7y

Combine like terms: -7y + 7y = 0
4x + 0 = 21 + 7y
4x = 21 + 7y

Divide each side by '4'.
x = 5.25 + 1.75y

Simplifying
x = 5.25 + 1.75y

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