Question

simplify : {11-(-64)}-{(-10) +(-15)

Answer 1

$= (11 + 64) - ( - 25) \\ = 75 + 25 \\ = 100$

Answer 2

={11-(-64)} - {(-10)+(-15)}

For this question to be solved you should first know the BODMAS
WE WILL FIRST SOLVE THE BRACKET AND SUBTRACTION
={11-(-64)} - {(-10)+(-15)}
=(11+64) - (-10-15)
=75-(-25)
=75+25
=100
Hope it helps