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Mathematics 19 Online
OpenStudy (anonymous):

simple fraction problem!

OpenStudy (anonymous):

(1/3 + 5/8) x 4/5 =

OpenStudy (anonymous):

write answer in simplest form please!

OpenStudy (freckles):

hello!

OpenStudy (freckles):

you can find a common denominator to add the fractions inside the ( )

OpenStudy (anonymous):

how

OpenStudy (freckles):

hint:3 and 8 both go into 24

OpenStudy (anonymous):

then you change both of the denominator too 24

OpenStudy (freckles):

yes but whatever you multiply the bottoms to get that 24 you will also have to multiply that same number to the top

OpenStudy (freckles):

example" \[\frac{1}{3} =\frac{1 \cdot 8 }{3 \cdot 8}=\frac{8}{24}\]

OpenStudy (freckles):

you write the other fraction as some number over 24

OpenStudy (freckles):

\[\frac{5}{8}=\frac{5 \cdot ?}{8 \cdot ?}=\frac{-}{24}\]

OpenStudy (anonymous):

5/24

OpenStudy (freckles):

well no 5 times 3 isn't going to be 5

OpenStudy (anonymous):

15/24

OpenStudy (freckles):

\[\frac{5}{8} =\frac{ 5 \cdot 3}{8 \cdot 3}=\frac{15}{24}\] right

OpenStudy (freckles):

\[(\frac{1}{3}+\frac{5}{8}) \frac{4}{5} \\ (\frac{8}{24}+\frac{15}{24})\frac{4}{5} \\ (\frac{8+15}{24})\frac{4}{5}\]

OpenStudy (freckles):

now find the sum of 8 and 15

OpenStudy (freckles):

then when done you can reduce then multiply or multiply then reduce

OpenStudy (anonymous):

well 8 does not go into 15

OpenStudy (freckles):

why are you dividing 15 by 8?

OpenStudy (freckles):

+ means add or to find the sum

OpenStudy (anonymous):

oh...

OpenStudy (anonymous):

ik

OpenStudy (freckles):

well have you done 8+15 yet?

OpenStudy (freckles):

|dw:1441049136428:dw| which should make sense since if you start with 8 apples and you are given 15 more apples then you should have 23 apples.

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