What is 3 x (4x - 5) = 12x - 5

Question

Mathematics

Giuliana Forbes

12 October, 17:35

What is 3 x (4x - 5) = 12x - 5

+3

Answers (2)

Know the Answer?

Roselyn · Answer 1

Original:

3x (4x) + 3x (5) = 12x-5

Distributive Property:

3x (4x) + 3x (5) = 12x-5

12x+15x=12x-5

Combine like terms:

27x=12x-5

Isolate the terms:

27x-12x=12x-12x-5

15x=-5

Simplify:

15x/15=-5/15

x=-1/3

Answer:

x=-1/3 or x=-0/333 ...

Yoda · Answer 2

Isolate for x

First expand the bracket to

12x^2 - 15x = 12x - 5

Move everything to one side

12x^2 - 27x + 5

Use quadratic formula and sub in values

X = 2.046989

X = 0.203610