4x-1+2x-1=21

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Solution for 4x-1+2x-1=21 equation:


Simplifying
4x + -1 + 2x + -1 = 21

Reorder the terms:
-1 + -1 + 4x + 2x = 21

Combine like terms: -1 + -1 = -2
-2 + 4x + 2x = 21

Combine like terms: 4x + 2x = 6x
-2 + 6x = 21

Solving
-2 + 6x = 21

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + 6x = 21 + 2

Combine like terms: -2 + 2 = 0
0 + 6x = 21 + 2
6x = 21 + 2

Combine like terms: 21 + 2 = 23
6x = 23

Divide each side by '6'.
x = 3.833333333

Simplifying
x = 3.833333333

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