21a+3b+81=0

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Solution for 21a+3b+81=0 equation:


Simplifying
21a + 3b + 81 = 0

Reorder the terms:
81 + 21a + 3b = 0

Solving
81 + 21a + 3b = 0

Solving for variable 'a'.

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

Add '-81' to each side of the equation.
81 + 21a + -81 + 3b = 0 + -81

Reorder the terms:
81 + -81 + 21a + 3b = 0 + -81

Combine like terms: 81 + -81 = 0
0 + 21a + 3b = 0 + -81
21a + 3b = 0 + -81

Combine like terms: 0 + -81 = -81
21a + 3b = -81

Add '-3b' to each side of the equation.
21a + 3b + -3b = -81 + -3b

Combine like terms: 3b + -3b = 0
21a + 0 = -81 + -3b
21a = -81 + -3b

Divide each side by '21'.
a = -3.857142857 + -0.1428571429b

Simplifying
a = -3.857142857 + -0.1428571429b

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