Question

Answer 1

`#lv`

`a)-5/8 . (-4/10)^2`

`=-5/8 . 16/100`

`=(-5.16)/8.100`

`=-80/800`

`=-1/10`

`b)-2022/2021 . 9/11+ -2022/2021 . 2/11`

`= -2022/2021 . (9/11+2/11)`

`= -2022/2021 . 1`

`= -2022/2021`

`c)-5/7 . 2/11 + -5/7 . 9/11 + 5/7`

`=5/7. (-1) .2/11 + 5/7 . (-1) . 9/11+ 5/7 . 1`

`=5/7 . (-2/11) + 5/7 . (-9/11) + 5/7 . 1`

`=5/7 (-2/11 + (-9)/11 + 1)`

`=5/7 (-1+1)`

`=5/7 . 0`

`=0`

`d)-3/8 . 1/2 + 2/6 . (-3/8) + 1/3 : (-8/3)`

`=-3/8 . 1/2 + 2/6 . (-3/8) + 1/3 . (-3/8)`

`=-3/8(1/2+2/6+1/3)`

`=-3/8(3/6+2/6+2/6)`

`=-3/8. 7/6`

`=(-3.7)/(8.6)`

`=(-1.7)/(8.2)`

`=-7/16`