18=-5b-17 (solve for b) grad lvl. 7

b = -7

Step-by-step explanation:

If you want, you can flip the equation around so that it's easier to look at. I usually do this when working with an equation because it seems more natural to me, but this is completely up to you.

-5b-17=18

We need to get "b" by itself since we don't know what it is. Everything else is "known" - we can say that 18 is 18, -5 is -5, but we don't know what "b" is. Let's start by adding 17 to both sides. By doing this, we get rid of the -17 on the left, bringing us one step closer to the answer!

-5b-17 (+17) = 18 (+17)

---remember you have to add to both sides or you mess up the meaning of "="

-5b = 35

Now, all that is left is that -5 attached to the "b". We can get rid of it by dividing both sides by -5. This will remove it from the left side!

(-5b)/-5 = (35)/-5

b = -7 (remember that a positive divided by a negative makes it negative!)

Some advanced notes (look here if you want help with the specific topics used above):

1. If I have an statement that says 0=0 and I add 2 to one side, I have to add it to the other side to still make it equal.

0 = 0 + 2;        0=2           (bad math, 0 isn't the same as 2!)

2+0 = 0+2;      2=2           (good math!)

2. Doing something like dividing on a multiplier is what is called an "inverse operation" and results in a multiplying of 1. It's easier to see:

-5b = 35

(-5b)/-5 = (35)/-5

--- dividing a number by itself gives a 1, like saying 2/2 or 10/10, so the -5's cancel on the left, leaving a 1

(-5b)/-5 = (35)/-5

1*b = (35)/-5

Hope this helps!

i think it would be 43 movies that would have to be watched.

step-by-step explanation:

think about it. for the second plan, every month is 8 dollars. 8 x 12= 96. so thats the number for the second plan. now for the first plan, its annual meaning you have to pay 10 dollars every year. so now you have to get an equivalent amount of 86 since 96-10=86. 86 divided by 2 since every movie costs 2$ then you would have to watch 43 movies a year to get the same as the second plan. i really hoped this . have a wonderful day as well!

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation: