Question

0.8 + 5/7 x 3/7.
Keeps saying 1.1 is wrong. Please help!!

Answer 1

`1(6)/(49)` or
`(55)/(49)` or 1.12

Explanation:

`0.8+(5)/(7) * (3)/(7)`

First find 0.8 as a fraction

`0.8 =(8)/(10) = (4)/(5)`

Now according to PEMDAS, we do the multiplication then addition, so we multiply the numerator then the denominator

`(5)/(7) * (3)/(7) = (15)/(49)`

Since this answer cannot be simplified, now we move to addition and find the LCD (least common denominator) which would be 245 (49 x 5)

`(4)/(5) +(15)/(49) = (196)/(245) +(75)/(245)`

Now we add the numerators

`(196)/(245) +(75)/(245)=(275)/(245)`

Now we simplify as far down as we can, which would be by 5

`(275)/(245) = (55)/(49)` or
`1(6)/(49)`

If the answer calls for a decimal, we would round to the hundredths

`(55)/(49) = 1.12`