3) 15 +b=23
I need help pls I don’t get it

b=8

Step-by-step explanation:

15 +b=23

get b by itself by subtracting 15 on both sides

b=8

the answer is

 =  8

you need to Subtract  15  from both sides of the equation

+ 15 = 23 + 15 − 15 = 23 − 15

simplify

and then you get your answer

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.