3x+2(18-x)=40

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Solution for 3x+2(18-x)=40 equation:


Simplifying
3x + 2(18 + -1x) = 40
3x + (18 * 2 + -1x * 2) = 40
3x + (36 + -2x) = 40

Reorder the terms:
36 + 3x + -2x = 40

Combine like terms: 3x + -2x = 1x
36 + 1x = 40

Solving
36 + 1x = 40

Solving for variable 'x'.

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

Add '-36' to each side of the equation.
36 + -36 + 1x = 40 + -36

Combine like terms: 36 + -36 = 0
0 + 1x = 40 + -36
1x = 40 + -36

Combine like terms: 40 + -36 = 4
1x = 4

Divide each side by '1'.
x = 4

Simplifying
x = 4

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