Question

Use three different values of n to demonstrate that 2n + 3n is equivalent to 5n.

Answer 1

You could use 10, 6 and 7.

Using ten would have them all equal 50, using 6 would have them all equal 30 and using 7 would have them all equal 35.

Hope this helps!

Answer 2

You can use 10, 5, or 20
If N=10 substitute n with 10, and it should look like this: 2(10)+3(10)= 5(10)
^ ^ ^
20+30 =50
Do that to the rest of the numbers in order to substitute N.