10x-21=2x(2)

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Solution for 10x-21=2x(2) equation:


Simplifying
10x + -21 = 2x(2)

Reorder the terms:
-21 + 10x = 2x(2)

Reorder the terms for easier multiplication:
-21 + 10x = 2 * 2x

Multiply 2 * 2
-21 + 10x = 4x

Solving
-21 + 10x = 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-21 + 10x + -4x = 4x + -4x

Combine like terms: 10x + -4x = 6x
-21 + 6x = 4x + -4x

Combine like terms: 4x + -4x = 0
-21 + 6x = 0

Add '21' to each side of the equation.
-21 + 21 + 6x = 0 + 21

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

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

Divide each side by '6'.
x = 3.5

Simplifying
x = 3.5

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