18x^3+21x^2-15a=0

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Solution for 18x^3+21x^2-15a=0 equation:


Simplifying
18x3 + 21x2 + -15a = 0

Reorder the terms:
-15a + 21x2 + 18x3 = 0

Solving
-15a + 21x2 + 18x3 = 0

Solving for variable 'a'.

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

Add '-21x2' to each side of the equation.
-15a + 21x2 + -21x2 + 18x3 = 0 + -21x2

Combine like terms: 21x2 + -21x2 = 0
-15a + 0 + 18x3 = 0 + -21x2
-15a + 18x3 = 0 + -21x2
Remove the zero:
-15a + 18x3 = -21x2

Add '-18x3' to each side of the equation.
-15a + 18x3 + -18x3 = -21x2 + -18x3

Combine like terms: 18x3 + -18x3 = 0
-15a + 0 = -21x2 + -18x3
-15a = -21x2 + -18x3

Divide each side by '-15'.
a = 1.4x2 + 1.2x3

Simplifying
a = 1.4x2 + 1.2x3

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