4x-21=2y-7

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Solution for 4x-21=2y-7 equation:


Simplifying
4x + -21 = 2y + -7

Reorder the terms:
-21 + 4x = 2y + -7

Reorder the terms:
-21 + 4x = -7 + 2y

Solving
-21 + 4x = -7 + 2y

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 + 4x = -7 + 21 + 2y

Combine like terms: -21 + 21 = 0
0 + 4x = -7 + 21 + 2y
4x = -7 + 21 + 2y

Combine like terms: -7 + 21 = 14
4x = 14 + 2y

Divide each side by '4'.
x = 3.5 + 0.5y

Simplifying
x = 3.5 + 0.5y

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