This is a bit of a tricky one since we are working with thousandths as the denominator. First, we want the common denominator, so we can multiply 8/10 by 100 to get 1000 as that denominator. This gives 800/1000. Next, let's solve the whole numbers. You must add a negative number to a negative number if you want a smaller answer, so we add -5, which means we now have -14 and 800/1000. Now, we subtract absolute value of the larger negative, or our goal, -15 and 465/1000, minus 14 and 800/1000. This yields 665/1000. Now we can add this value to our previous subtraction of 5.
So, the answer is 5 and 665/1000.
Answer:
The answer is 3
Step-by-step explanation:
........
Answer:
A cookie costs 1 dollar. A brownie costs 2 dollars.
Step-by-step explanation:
C = Cookie B = Brownie
Your two equations:
3c + 2b =7
5c + 4b = 13
Make both equations have an equivalent section:
2(3c + 2b = 7)
6c + 4b = 14
5c + 4b = 13
c = 1
To find B's value:
3c + 2b = 7
3 x 1 + 2b = 7
3 + 2b = 7
2b =4
b =2
Hope this helps.