How many sweets were in each type of bag? m We STILL don’t know! n Solving equations allows us to calculate the number of sweets in each bag! n n + 2 =5 n n + 5 = 11 n n + 3 = 17 n n + 4 = 56 What happens if we just have a number of bags and no spare sweets? n n 2n = 10 n n 3n n = 6 n n 4n n n = 8 n n 3n n = 21 n n n n n n 6n = 24 n n n n n n n n 8n = 56