4x-20-21=0

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Solution for 4x-20-21=0 equation:


Simplifying
4x + -20 + -21 = 0

Reorder the terms:
-20 + -21 + 4x = 0

Combine like terms: -20 + -21 = -41
-41 + 4x = 0

Solving
-41 + 4x = 0

Solving for variable 'x'.

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

Add '41' to each side of the equation.
-41 + 41 + 4x = 0 + 41

Combine like terms: -41 + 41 = 0
0 + 4x = 0 + 41
4x = 0 + 41

Combine like terms: 0 + 41 = 41
4x = 41

Divide each side by '4'.
x = 10.25

Simplifying
x = 10.25

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