Question

"Simplify: i) -2 + ( 3 / 8 ) + ( - 1 / 5 ) ii) (2/3) + ( -7/11) + (-1/4 ) pls say fast

Answer 1

`(-73)/(40)`

`(-29)/(132)`

Explanation:

`-(2)/(1)+(3)/(8)-(1)/(5)`

`-(80)/(40)+(15)/(40)-(8)/(40)`

`(-80+15-8)/(40)`

`(-73)/(40)`

`(2)/(3)-(7)/(11)-(1)/(4)`

`(88)/(132)-(84)/(132)-(33)/(132)`

`(88-84-33)/(132)`

`(-29)/(132)`

Answer 2

-1 33/40

- 29/132

Explanation:

i) -2 + ( 3 / 8 ) + ( - 1 / 5 ) = -2 + 3/8 - 1/5=

- 2 + 15/40- 8/40= -2 + 7/40= -1 33/40

ii) (2/3) + ( -7/11) + (-1/4 ) = 2/3 - 7/11 - 1/4=

2/3 - (28+11)/44= 2/3 - 39/44= (2*44- 3*39) /3*44= - 29/132