16+x-5(x-9)=21

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Solution for 16+x-5(x-9)=21 equation:


Simplifying
16 + x + -5(x + -9) = 21

Reorder the terms:
16 + x + -5(-9 + x) = 21
16 + x + (-9 * -5 + x * -5) = 21
16 + x + (45 + -5x) = 21

Reorder the terms:
16 + 45 + x + -5x = 21

Combine like terms: 16 + 45 = 61
61 + x + -5x = 21

Combine like terms: x + -5x = -4x
61 + -4x = 21

Solving
61 + -4x = 21

Solving for variable 'x'.

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

Add '-61' to each side of the equation.
61 + -61 + -4x = 21 + -61

Combine like terms: 61 + -61 = 0
0 + -4x = 21 + -61
-4x = 21 + -61

Combine like terms: 21 + -61 = -40
-4x = -40

Divide each side by '-4'.
x = 10

Simplifying
x = 10

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