Question

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Write and solve an algebraic equation for the situation.
Eight and one-half years ago, Steven was 7 years old. How old is he now?

Answer 1

Can someone answer this as well?
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Joseph had 7 1/4 ounces of candy to share with his friends. He gave them
2 4/5 ounces of candy when they came over to play video games. How many ounces of candy does Joseph have left?

Answer 2

First questionš

x = present age

Eight and one-half years ago, Steven was 7 years old means:

x - 8.5 = 7

x = 7 + 8.5 = 15.5

Now he is 15.5 years old.

Second question

x = ounces left

x = 7 1/4 - 2 4/5 = 7 + 1/ 4 - ( 2 + 4 / 5 ) =

7 + 5 • 1 / 5 • 4 - ( 2 + 4 • 4 / 4 • 5 ) =

7 + 5 / 20 - ( 2 + 16 / 20 ) =

140 / 20 + 5 / 20 - ( 40 / 20 + 16 / 20 ) =

145 / 20 - 56 / 20 = 89 / 20

You can write results as:

x = 80 / 20 + 9 / 20 = 4 9/20