16x-9=13x-21

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Solution for 16x-9=13x-21 equation:


Simplifying
16x + -9 = 13x + -21

Reorder the terms:
-9 + 16x = 13x + -21

Reorder the terms:
-9 + 16x = -21 + 13x

Solving
-9 + 16x = -21 + 13x

Solving for variable 'x'.

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

Add '-13x' to each side of the equation.
-9 + 16x + -13x = -21 + 13x + -13x

Combine like terms: 16x + -13x = 3x
-9 + 3x = -21 + 13x + -13x

Combine like terms: 13x + -13x = 0
-9 + 3x = -21 + 0
-9 + 3x = -21

Add '9' to each side of the equation.
-9 + 9 + 3x = -21 + 9

Combine like terms: -9 + 9 = 0
0 + 3x = -21 + 9
3x = -21 + 9

Combine like terms: -21 + 9 = -12
3x = -12

Divide each side by '3'.
x = -4

Simplifying
x = -4

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