18c^2+4=21c+4

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Solution for 18c^2+4=21c+4 equation:


Simplifying
18c2 + 4 = 21c + 4

Reorder the terms:
4 + 18c2 = 21c + 4

Reorder the terms:
4 + 18c2 = 4 + 21c

Add '-4' to each side of the equation.
4 + -4 + 18c2 = 4 + -4 + 21c

Combine like terms: 4 + -4 = 0
0 + 18c2 = 4 + -4 + 21c
18c2 = 4 + -4 + 21c

Combine like terms: 4 + -4 = 0
18c2 = 0 + 21c
18c2 = 21c

Solving
18c2 = 21c

Solving for variable 'c'.

Reorder the terms:
-21c + 18c2 = 21c + -21c

Combine like terms: 21c + -21c = 0
-21c + 18c2 = 0

Factor out the Greatest Common Factor (GCF), '3c'.
3c(-7 + 6c) = 0

Ignore the factor 3.

Subproblem 1

Set the factor 'c' equal to zero and attempt to solve: Simplifying c = 0 Solving c = 0 Move all terms containing c to the left, all other terms to the right. Simplifying c = 0

Subproblem 2

Set the factor '(-7 + 6c)' equal to zero and attempt to solve: Simplifying -7 + 6c = 0 Solving -7 + 6c = 0 Move all terms containing c to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + 6c = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 6c = 0 + 7 6c = 0 + 7 Combine like terms: 0 + 7 = 7 6c = 7 Divide each side by '6'. c = 1.166666667 Simplifying c = 1.166666667

Solution

c = {0, 1.166666667}

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