3+20x=21x+7

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Solution for 3+20x=21x+7 equation:


Simplifying
3 + 20x = 21x + 7

Reorder the terms:
3 + 20x = 7 + 21x

Solving
3 + 20x = 7 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
3 + 20x + -21x = 7 + 21x + -21x

Combine like terms: 20x + -21x = -1x
3 + -1x = 7 + 21x + -21x

Combine like terms: 21x + -21x = 0
3 + -1x = 7 + 0
3 + -1x = 7

Add '-3' to each side of the equation.
3 + -3 + -1x = 7 + -3

Combine like terms: 3 + -3 = 0
0 + -1x = 7 + -3
-1x = 7 + -3

Combine like terms: 7 + -3 = 4
-1x = 4

Divide each side by '-1'.
x = -4

Simplifying
x = -4

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