49d^2+9=42d

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Solution for 49d^2+9=42d equation:


Simplifying
49d2 + 9 = 42d

Reorder the terms:
9 + 49d2 = 42d

Solving
9 + 49d2 = 42d

Solving for variable 'd'.

Reorder the terms:
9 + -42d + 49d2 = 42d + -42d

Combine like terms: 42d + -42d = 0
9 + -42d + 49d2 = 0

Factor a trinomial.
(3 + -7d)(3 + -7d) = 0

Subproblem 1

Set the factor '(3 + -7d)' equal to zero and attempt to solve: Simplifying 3 + -7d = 0 Solving 3 + -7d = 0 Move all terms containing d to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -7d = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -7d = 0 + -3 -7d = 0 + -3 Combine like terms: 0 + -3 = -3 -7d = -3 Divide each side by '-7'. d = 0.4285714286 Simplifying d = 0.4285714286

Subproblem 2

Set the factor '(3 + -7d)' equal to zero and attempt to solve: Simplifying 3 + -7d = 0 Solving 3 + -7d = 0 Move all terms containing d to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -7d = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -7d = 0 + -3 -7d = 0 + -3 Combine like terms: 0 + -3 = -3 -7d = -3 Divide each side by '-7'. d = 0.4285714286 Simplifying d = 0.4285714286

Solution

d = {0.4285714286, 0.4285714286}

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