Question

What is the value of a in the equation 4a + 3(a + 1) = 24?

2
3
7
21

Answer 1

4a + 3(a + 1) = 24
4a + 3a + 3 = 24
7a + 3 - 3 = 24 - 3
7a / 7 = 21 / 7
= 3

The answer is 3!

Answer 2

ok can you help me with 2 or 3 more please

Answer 3

An equation is shown below:

3(4x + 5) = 12

Which of the following correctly shows the beginning steps to solve this equation?


Step 1: 12x + 15 = 12
Step 2: 12x = −3

Step 1: 12x + 5 = 12
Step 2: 12x = 7

Step 1: 7x + 5 = 12
Step 2: 7x = 7

Step 1: 7x + 8 = 12
Step 2: 7x = 4