18+3=3(1+2x)

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Solution for 18+3=3(1+2x) equation:


Simplifying
18 + 3 = 3(1 + 2x)

Combine like terms: 18 + 3 = 21
21 = 3(1 + 2x)
21 = (1 * 3 + 2x * 3)
21 = (3 + 6x)

Solving
21 = 3 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
21 + -6x = 3 + 6x + -6x

Combine like terms: 6x + -6x = 0
21 + -6x = 3 + 0
21 + -6x = 3

Add '-21' to each side of the equation.
21 + -21 + -6x = 3 + -21

Combine like terms: 21 + -21 = 0
0 + -6x = 3 + -21
-6x = 3 + -21

Combine like terms: 3 + -21 = -18
-6x = -18

Divide each side by '-6'.
x = 3

Simplifying
x = 3

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