Question

what should be added to (-13/4+-3/8)to get -1

Answer 1

Let x should be added
(-13/4+-3/8)+ x= -1
(-13×2-3×1)/8 + x= -1
(-26- 3)/8+ x= -1
-29/8 + x= -1
x= -1+(29/8)
x= (-1×8 +29)/8
x= (-8+29)/8
x= 21/8
21/8 is added