123456789 = 1 how to get it by addition and subtraction Emergency help solution under 123456789 in order and to add and subtract, not multiplication and division

1+2+3+4-5+6+7-8-9=1

From half, one-third, one-quarter. To one hundredth, pick out ten numbers and add a sign so that their sum equals minus one

There are two! I'm dead!
1/2-1/6-1/12-1/20-1/30-1/42-1/56-1/72-1/90-1/10=-1
-1/5-1/6-1/8-1/9-1/10-1/12-1/15-1/18-1/20-1/24 =-1

Mathematical positive and negative number: - 25 = ()% what percentage is negative 25?

-25=-2500%

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