4x+6=-5x+21

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Solution for 4x+6=-5x+21 equation:


Simplifying
4x + 6 = -5x + 21

Reorder the terms:
6 + 4x = -5x + 21

Reorder the terms:
6 + 4x = 21 + -5x

Solving
6 + 4x = 21 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
6 + 4x + 5x = 21 + -5x + 5x

Combine like terms: 4x + 5x = 9x
6 + 9x = 21 + -5x + 5x

Combine like terms: -5x + 5x = 0
6 + 9x = 21 + 0
6 + 9x = 21

Add '-6' to each side of the equation.
6 + -6 + 9x = 21 + -6

Combine like terms: 6 + -6 = 0
0 + 9x = 21 + -6
9x = 21 + -6

Combine like terms: 21 + -6 = 15
9x = 15

Divide each side by '9'.
x = 1.666666667

Simplifying
x = 1.666666667

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