Tom has 6 fewer pencils than ari. Tom has 7 pencils. How many pencils does Ari have?
6 fewer means less. Let a = Ari's pencils. We have:
a - 6 = 7
Add 6 to each side
a = 13
6 fewer means less. Let a = Ari's pencils. We have:
a - 6 = 7
Add 6 to each side
a = 13