How do you do 4y plus 1 equals 13?

Answer 1

What is it that you want to "do" to it ?

Would you like to know what value for 'y' makes it true ?

Here's how you find that number:

4y + 1 = 13

Subtract 1 from each side:

4y = 12

Divide each side by 4:

y = 12/4 = 3

Whenever [ y = 3 ], then [ 4y plus 1 ] actually is 13.