5. Solve y = ab - x for b.

(y+x)/a=b

or b=(y+x)/a

Step-by-step explanation:

First add both sides by x:

y+x=ab

Now divide a on both sides:

(y+x)/a=b

Hope this helps!

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870

answer: (3,11) is your answer.