Answer: y = 5
Step-by-step explanation: We'll put Harry's name as y to match the equation below. Without looking at the written equations we can find the same thing from the words: Sam is 5 times y's (Harry's) age. 5y. He is also 10 + (more) than 3 times y's (Harry's) age. 10 + 3y. Since these are two different ways to show the same persons age, we can make them equal to each other
5y=10+3y. We first need y only on one side so we will subtract 3y from both.
5y - 3y and 10 + 3y- 3y. This leaves us with 2y = 10. We then divide by 2 to have y by itself. 2y/2 and 10/2. Our answer from this is y = 5.