2b^2-14b=b-7

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Solution for 2b^2-14b=b-7 equation:


Simplifying
2b2 + -14b = b + -7

Reorder the terms:
-14b + 2b2 = b + -7

Reorder the terms:
-14b + 2b2 = -7 + b

Solving
-14b + 2b2 = -7 + b

Solving for variable 'b'.

Reorder the terms:
7 + -14b + -1b + 2b2 = -7 + b + 7 + -1b

Combine like terms: -14b + -1b = -15b
7 + -15b + 2b2 = -7 + b + 7 + -1b

Reorder the terms:
7 + -15b + 2b2 = -7 + 7 + b + -1b

Combine like terms: -7 + 7 = 0
7 + -15b + 2b2 = 0 + b + -1b
7 + -15b + 2b2 = b + -1b

Combine like terms: b + -1b = 0
7 + -15b + 2b2 = 0

Factor a trinomial.
(1 + -2b)(7 + -1b) = 0

Subproblem 1

Set the factor '(1 + -2b)' equal to zero and attempt to solve: Simplifying 1 + -2b = 0 Solving 1 + -2b = 0 Move all terms containing b to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -2b = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2b = 0 + -1 -2b = 0 + -1 Combine like terms: 0 + -1 = -1 -2b = -1 Divide each side by '-2'. b = 0.5 Simplifying b = 0.5

Subproblem 2

Set the factor '(7 + -1b)' equal to zero and attempt to solve: Simplifying 7 + -1b = 0 Solving 7 + -1b = 0 Move all terms containing b to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1b = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1b = 0 + -7 -1b = 0 + -7 Combine like terms: 0 + -7 = -7 -1b = -7 Divide each side by '-1'. b = 7 Simplifying b = 7

Solution

b = {0.5, 7}

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