Question

1/3 minus -7/8 help?
((Algebra 1))

Answer 1

is it double minus?

Answer 2

you need to make it common denominator

Answer 3

29/24

Answer 4

\(1/3-(-7/8)=1/3+7/8\)
recall \((-)(-)=+\)

Answer 5

only 7/8 is negative

Answer 6

but you have minus btw the two fraction yes?

Answer 7

but if it is negative, then nyour result is -13/24

Answer 8

i have to show the work also, and i dont understand much about fractions in general.

Answer 9

\(\large \frac{1}{3}-\frac{-7}{8}\)? this right

Answer 10

yes

Answer 11

all i know so far is how to get the lcd, which is 24.

Answer 12

well think about this
\(a-(-b)=?\)

Answer 13

that is (1/3)--(7/8)=
L.c.m =24
(8+21)/24
= 29/24

Answer 14

because double minus a--b=a+b

Answer 15

from arithmetic rules
\(a-(-b)=a+(-(-b))=a+b\)

Answer 16

recall that \((-)*(-)=(+)\)

Answer 17

that is also applied to rational numbers as well

Answer 18

rational numbers are basically fractions

Answer 19

So \(\large \frac{1}{3}+\frac{7}{8}=\frac{8}{24}+\frac{21}{24}=\frac{8+21}{24}\)

Answer 20

ohhh okay

Answer 21

how did the 7/8 turn into 21/24?

Answer 22

well we are doing Common Denominator
and that is 24 correct?

Answer 23

yes.

Answer 24

we multiplied 3 by 8 to 24
and 8 by 3 to get 24
but we need to multiply top and bottom
so 1/3 has to be multiplied by 8 and 7/8 must be multiplied by 3
top and bottom

Answer 25

so the answer would be 29/24?

Answer 26

correct

Answer 27

okay, thank you!

Answer 28

yw!