Here ya go!!! this should be correct
Substitute 1 for d. d+18=1+18=19
Making a list can help you solve a math problem because it shows you the information you will be using.
Sally is 13 years old. Sally's brother Mark is twice as old as Sally. Sally's older sister Daffy is the sum of Sally and Mark's age. How old is Daffy?
making a list in this question tells you all of the different ages and lists them out in a row.
No, when you have a zero in that space you don't necessarily need an addendum unless it helps you.
Here s the question this is the doc i put it on please help
