2x-3(x-7)=18

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Solution for 2x-3(x-7)=18 equation:


Simplifying
2x + -3(x + -7) = 18

Reorder the terms:
2x + -3(-7 + x) = 18
2x + (-7 * -3 + x * -3) = 18
2x + (21 + -3x) = 18

Reorder the terms:
21 + 2x + -3x = 18

Combine like terms: 2x + -3x = -1x
21 + -1x = 18

Solving
21 + -1x = 18

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + -1x = 18 + -21

Combine like terms: 21 + -21 = 0
0 + -1x = 18 + -21
-1x = 18 + -21

Combine like terms: 18 + -21 = -3
-1x = -3

Divide each side by '-1'.
x = 3

Simplifying
x = 3

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