Let Robs weekly allowances be X he spent half f it n candy so he spent X/2 he gardened for $7 extra and at the end he had $12 so to calculate his weekly allowances, we will develop the following equation X/2 +7=12 X/2=12-7 X/2=5 X=5x2 X=10 Rob's weekly allowance is $10
The three 1/3’s add up to 1. The 7 and 9 add up to 16. Add the 1 to that and you get 17. Then change the 1/2 to 4/8 and add that to the 5/8. You then get 1 and 1/8. Then you add that to the 17.
