8x+9+3x-15=11x+21-4x

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Solution for 8x+9+3x-15=11x+21-4x equation:


Simplifying
8x + 9 + 3x + -15 = 11x + 21 + -4x

Reorder the terms:
9 + -15 + 8x + 3x = 11x + 21 + -4x

Combine like terms: 9 + -15 = -6
-6 + 8x + 3x = 11x + 21 + -4x

Combine like terms: 8x + 3x = 11x
-6 + 11x = 11x + 21 + -4x

Reorder the terms:
-6 + 11x = 21 + 11x + -4x

Combine like terms: 11x + -4x = 7x
-6 + 11x = 21 + 7x

Solving
-6 + 11x = 21 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
-6 + 11x + -7x = 21 + 7x + -7x

Combine like terms: 11x + -7x = 4x
-6 + 4x = 21 + 7x + -7x

Combine like terms: 7x + -7x = 0
-6 + 4x = 21 + 0
-6 + 4x = 21

Add '6' to each side of the equation.
-6 + 6 + 4x = 21 + 6

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

Combine like terms: 21 + 6 = 27
4x = 27

Divide each side by '4'.
x = 6.75

Simplifying
x = 6.75

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