Mathematics

Ciara Lin

13 October, 09:35

1. what is the simplified equation to 6y + 4 = 8 + 2y + 2y?

2. How many solutions does the equation - 2a + 2a + 7 = 8 have?

3. The steps below show the incomplete solution to find the value of n for the equation 4n - 2n + 4 = - 1 + 17:

Step 1: 4n - 2n + 4 = - 1 + 17

Step 2: 4n - 2n + 4 = 16

Step 3: 2n + 4 = 16

Which of these is most likely the next step?

2n = 12

2n = 4

2n = 8

2n = 20