2x-3x=21+3(x+1)

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Solution for 2x-3x=21+3(x+1) equation:


Simplifying
2x + -3x = 21 + 3(x + 1)

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

Reorder the terms:
-1x = 21 + 3(1 + x)
-1x = 21 + (1 * 3 + x * 3)
-1x = 21 + (3 + 3x)

Combine like terms: 21 + 3 = 24
-1x = 24 + 3x

Solving
-1x = 24 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
-1x + -3x = 24 + 3x + -3x

Combine like terms: -1x + -3x = -4x
-4x = 24 + 3x + -3x

Combine like terms: 3x + -3x = 0
-4x = 24 + 0
-4x = 24

Divide each side by '-4'.
x = -6

Simplifying
x = -6

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