Question

Which equation is equivalent to 3[x + 3(4x – 5)] = 15x – 24?15x – 15 = 15x – 2415x – 5 = 15x – 2439x – 45 = 15x – 2439x – 15 = 15x – 24?

Answer 1

Answer:

3[x + 3(4x – 5)] = (39x-15)

Step-by-step explanation:

The given expression is : 3[x + 3(4x – 5)]

We need to find the equivalent expression for this given expression. We need to simplify it. Firstly, open the brackets. So,

$3[x + 3(4x -5)]=3[x+12x-15]$

Again open the brackets,

$3[x+12x-15]=3x+36x-45$

Now adding numbers having variables together. So,

$3[x + 3(4x - 5)]=39x-15$

So, the equivalent expression of 3[x + 3(4x – 5)] is (39x-15).