2r+21r+54=0

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Solution for 2r+21r+54=0 equation:


Simplifying
2r + 21r + 54 = 0

Reorder the terms:
54 + 2r + 21r = 0

Combine like terms: 2r + 21r = 23r
54 + 23r = 0

Solving
54 + 23r = 0

Solving for variable 'r'.

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

Add '-54' to each side of the equation.
54 + -54 + 23r = 0 + -54

Combine like terms: 54 + -54 = 0
0 + 23r = 0 + -54
23r = 0 + -54

Combine like terms: 0 + -54 = -54
23r = -54

Divide each side by '23'.
r = -2.347826087

Simplifying
r = -2.347826087

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