10 - 4 = 7
start at 10 and jump 4 steps backwards on the numberline. We arrive at 6.
so, 10 - 4 = 6
Hence 10 - 4 is not 7, but 10 - 4 = 6
Simplify
4/7+3/5+7/10.
11×4+14×7+17×10+110×13+113×16+116×19 =