Question

What is the best way to solve this equation? Justify your answer 3(5n - 7) = 24​

Answer 1

Below!

Explanation:

The best way to solve this equation is to use distributive property to simplify the LHS. Once simplified, isolate the variable. Once isolated, divide both sides (If needed). Once divided, your result will be nice and clear. Please seek below for solution of the problem.

• 3(5n - 7) = 24
• => 15n - 21 = 24
• => 15n = 24 + 21
• => 15n/15 = 24 + 21/15
• => n = 45/15
• => n = 3

Answer 2

Using the distributive property. (Answer is n = 3).

Explanation:

3(5n - 7) = 24

Solve it by multiplying the 3 and 5, and the 3 and 7, to make it:

15n - 21 = 24

Then, solve the rest of it.

15n -21 + 21 = 24 + 21

15n = 45

15n divided by 15 = 45 divided by 15

n = 3