Answer:
3(b+7)=6
Sum means adding, so 3 is multiplied by (b+7)
Answer:
1/4
Step-by-step explanation:
2/4 ÷ 2
Copy dot flip
2/4 * 1/2
We can cancel the 2 in the numerator and denominator
1/4 * 1/1
1/4
Figure out how many times 15 can go into 45 then once u got that u divided by 9 i think..
She should have added 3 instead of subtracting because u need to do inverse operation when solving equations.
This is applying the formula

We have a slight problem, though, because we are measuring rate in miles per hour, and we are measuring time in minutes. To make this problem solvable, we need to convert to either miles per minute or convert the time to hours. I'm going to convert the 15 minutes into hours:

Now that all of the units match, we have:

You can finish from there I'm sure.