1366+275-266-175
=(1366-266)+(275-175)
=1100+100
=1200
1366+275-266-175
=1366-266+275-175
=1100+100
=1200
1366+275-266-175
=(1366-266)+(275-175)
=1100+100
=1200
1366+275-266-175 = (1366-266) + ( 275-175)= 1100 + 100 = 1200
1366+275-266-175
= ( 1366-266)+(275-175)
= 1100 + 100
= 1200