Answer:
2.5
Step-by-step explanation:
8 -48 = 3 +13
*ADD 48 from each side(so -48+48=0 and 13+48=61)
8 = 3 +61
*Subtract from each side(so 3-3=0 and 8-3=5)
5 = 61
*Now u divide 5/5=1 and 61/5=2.5
Ok so this all about subtracting fractions this is what you want to do:
you can change 8 3/4 and 4 2/3 to have the same value and deominator
8 3/4 = 8 9/12(multiply both sides by 3)
4 2/3 = 4 8/12(multiply both sides by 4)
you do this because 12 is divisible by 3 and 4
then, subtract 4 8/12 from 8 9/12 because John is using some of the wood his dad gave him.
then subtract once again, taking 11/2 away from your difference.
again match the deominator of 11/2 to the deominator of your difference which should be 12. another divisible of 12 is 2 and 6.
11/2 = 66/12 = 5 6/12(multiply both the top and bottom by 6)
and start subtracting.
so John should have -1 5/12(?) wood left
