10 - 2(5+11)
Step 1
first, you need to eliminate the () by making the operation inside, it is an addition
10-2(5+11)
10-2(16)
then,
Step 2
do the operation related to the (), it is multiplication, rember a(b) = a*b = (a)b = (a)*(b), the meaning is the same.
10-2(16)
10-32
Step 3
finally, do the subtraction