(2 and one seventh) - (- 5 and one third) - (+ 3 and one seventh) - (- 3 and two thirds) how to do it, -15 1 / 3 - (3 1 / 7) - 4 2 / 3 - (8 1 / 7) - 0.5 - (3 and a quarter) + 2.75 - (7 and a half)

(2 and one seventh) - (- 5 and one third) - (+ 3 and one seventh) - (- 3 and two thirds) how to do it, -15 1 / 3 - (3 1 / 7) - 4 2 / 3 - (8 1 / 7) - 0.5 - (3 and a quarter) + 2.75 - (7 and a half)

(2 1 / 7) - (- 5 1 / 3) - (+ 3 1 / 7) - (- 3 2 / 3)
=2 1 / 7 + 5 1 / 3 + (- 3 1 / 7) + 3 2 / 3
=[2 1 / 7 + (- 3 1 / 7)] + (5 1 / 3 + 3 2 / 3)
=-(3 and 1 / 7-2 and 1 / 7) + 9
=-1+9
=8
-15 and 1 / 3 - (3 and 1 / 7) - 4 and 2 / 3 - (- 8 and 1 / 7)
=-15 1 / 3 + (- 3 1 / 7) + (- 4 2 / 3) + 8 1 / 7
=[(- 15 1 / 3) + (- 4 2 / 3)] + (8 1 / 7-3 1 / 7)
=(-20)+5
=-15
-0.5 - (3 and 1 / 4) + 2.75 - (7 and 1 / 2)
=-0.5+(-3.25)+2.75+(-7.5)
=2.75-(0.5+3.25+7.5)
=2.75-11.25
=-(11.25-2.75)
=-8.5

One in seven: what's the ratio of five in fourteen

2/5

What is 1 / 99 + 2 / 99 + 3 / 99 +. + 296 / 99

We can calculate 1 + 2 + 3 + first ＋296＝（1＋296）×296÷2＝43956
Then 43956 △ 99 = 444
So the original formula is 444