PLEASE HELP ME. I know I ask a lot, but I don’t know what I should come up with

equation :

1. b + 5 = 3

2. 3b = - 6

3. 10b = -20

1. b = 3 - 5 = - 2

2. 3b/3 = - 6/3 = - 2

3. 10b / 10 = - 20 / 10 = - 2

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

3

step-by-step explanation:

because where the point where the 2 lines intersect is (3,-1) the x value is 3