16=x+21

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Solution for 16=x+21 equation: 


Simplifying
16 = x + 21

Reorder the terms:
16 = 21 + x

Solving
16 = 21 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
16 + -1x = 21 + x + -1x

Combine like terms: x + -1x = 0
16 + -1x = 21 + 0
16 + -1x = 21

Add '-16' to each side of the equation.
16 + -16 + -1x = 21 + -16

Combine like terms: 16 + -16 = 0
0 + -1x = 21 + -16
-1x = 21 + -16

Combine like terms: 21 + -16 = 5
-1x = 5

Divide each side by '-1'.
x = -5

Simplifying
x = -5

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