Question 272327: How do you work out questions like 7g-g, i fully understand questions like a+a+a+a+a+a+a but this i don't understand ? Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! The key is to think of g as 1g
Think of it as 7g-1g
(7-1)*g=6g
g+g+g+g+g+g+g-g=g+g+g+g+g
remember multiplication is just quick addition
or think of it as you have 7 grand and I take one grand what do you have left?
