Question

What should be subtracted from -4/5 to get 1

Answer 1

let the number subtracted be x.

ATQ
-4/5 - x = 1
x = -4/5 - 1
x = (-4-5)/5
x = -9/5

so,
the number is -9/5

Answer 2

-4/5-X=1
X=-4/5-1/1
X=0.8...Or 9/5

HOPE THIS HELPS U.
@MP