(-1/3)^2 . I-18I- (-1/3)^3 :I+1/27I
(15/11-4/13):12/17 +(7/11-9/13):12/17
(-1/3)^2 . I-18I- (-1/3)^3 :I+1/27I (15/11-4/13):12/17 +(7/11-9/13):12/17
By Mary
By Mary
(-1/3)^2 . I-18I- (-1/3)^3 :I+1/27I
(15/11-4/13):12/17 +(7/11-9/13):12/17
a) `=1/9 . 18 – (-1/27): 1/27`
`=2- (-1)`
`=2+1=3`
b) `=(15/11-4/13) . 17/12 + (7/11-9/13) . 17/2`
`=17/12 . (15/11-4/13+7/11-9/13)`
`=17/12 . (22/11 – 13/13)`
`=17/12 . (2-1)=17/12 . 1=17/12`
`=>`
`(-1/3)^2 .|-18|- (-1/3)^3 :|+1/27|`
`=1/9. 18-(-1)/27:1/27`
`=2-(-1)`
`=2+1`
`=3`
`=>`
`(15/11-4/13):12/17 +(7/11-9/13):12/17`
`=(15/11-4/13+7/11-9/13):12/17`
`=(22/11-13/13):12/17`
`=1:12/17=17/12`