Question

10. Find the sum of (x+(x-1)}, {x-(x-1)},[x+(x-(x-1)}]​

Answer 1

(2x-1) + {1} + [x+1]

=2x-1+1+x+1

=3x+1

Answer 2

Answer:

x+(x-1)= 2x-1 -----(1)

x-(x-1)= x-x+1=1 -----(2)

x+(x-(x-1))=x+(x-x+1)=x+1 ----(3)

by adding the above 3 eqs,

2x-1+1+x+1= 3x+1

the sum of above is (3x+1)