Question

the sum of the four numbers are -1. if three of them are 3 /5, - 7/6, 2/5. find the fourth number

Answer 1

Let the unknown number be 'x'.

3/5-7/6+2/5+x= -1.

3/5+2/5-7/6+x= -1

5/5-7/6+x = -1

1-7/6+x = -1

6-7/6+ x =-1

-1/6+ x = -1

x= -1+1/6

x= -6+1/6

x= -5/6.

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