No it’s not. 1/4 of 126 is 31.5.
To get this you need to do 126/4
Answer:
b = 3, which is an extraneous solution because if we replace b = 3 in the equation, we must be 5/0 and 30/0, and there is division by 0.
Step-by-step explanation:

The minus common multiply must be (b-3)*(b+3) = b² - 9

7b - 21 + 5b + 15 = 10b
2b = 6
b = 3
Which is an extraneous solution because if we replace b = 3 in the equation, we must be 5/0 and 30/0, and there is division by 0. So this solution is invalid.
Yes it looks like it but I’m going to try it out
You do 3x6 first to get 18.
You get 3-18+2.
Then you do 3-18 which is -15.
You get -15+2.
Then you do -15+2 which is -13.
It equals -13.
The solution would be x=0 because the statement is false.