Answer
10 = x
Explanation:
The reason for this equation is that it say "5 years less", which we subtract 5, but from what exactly. Well, the next portion of the sentence says "twice Marco's Age" therefore, its 2x so we must subtract 5 from 2x. Later in the problem we are given Yolanda's age so our equation changes to this:
15 = 2x - 5 Now we just solve for x.
15 = 2x - 5 Add 5 to both sides.
+5 + 5
20 = 2x Divide by 2 on both sides
10 = x
As a result, Marcus is 10 years old. Hopefully this makes sense! Feel free to ask any questions!.
PS. This explanation isn't mine found it off another Expert Jose. P -Tutor