-2.5x+21=0

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Solution for -2.5x+21=0 equation: 


Simplifying
-2.5x + 21 = 0

Reorder the terms:
21 + -2.5x = 0

Solving
21 + -2.5x = 0

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 + -2.5x = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -2.5x = 0 + -21
-2.5x = 0 + -21

Combine like terms: 0 + -21 = -21
-2.5x = -21

Divide each side by '-2.5'.
x = 8.4

Simplifying
x = 8.4

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