Answer these questions by adding and subtracting fractions with unlike bases: 3/4 +9/7 =
-5/6 + 3/8=
-12 + 7/5=
2 2/3 + 6 1/8=
5 1/8 - (-1 1/20)=
answer these questions by adding and subtracting with like bases:
-5/6 + (-1 1/6)=
-3 3/4 - (-2 1/4) =
Make Sure to simplfiy if needed.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8

10.4 inches

step-by-step explanation:

2x2x2.6