21+x=0.84

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Solution for 21+x=0.84 equation: 


Simplifying
21 + x = 0.84

Solving
21 + x = 0.84

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + x = 0.84 + -21

Combine like terms: 21 + -21 = 0
0 + x = 0.84 + -21
x = 0.84 + -21

Combine like terms: 0.84 + -21 = -20.16
x = -20.16

Simplifying
x = -20.16

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