9x+16=3x+21

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Solution for 9x+16=3x+21 equation:


Simplifying
9x + 16 = 3x + 21

Reorder the terms:
16 + 9x = 3x + 21

Reorder the terms:
16 + 9x = 21 + 3x

Solving
16 + 9x = 21 + 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.
16 + 9x + -3x = 21 + 3x + -3x

Combine like terms: 9x + -3x = 6x
16 + 6x = 21 + 3x + -3x

Combine like terms: 3x + -3x = 0
16 + 6x = 21 + 0
16 + 6x = 21

Add '-16' to each side of the equation.
16 + -16 + 6x = 21 + -16

Combine like terms: 16 + -16 = 0
0 + 6x = 21 + -16
6x = 21 + -16

Combine like terms: 21 + -16 = 5
6x = 5

Divide each side by '6'.
x = 0.8333333333

Simplifying
x = 0.8333333333

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