Answer :

3x-5=40
   +5=+5
3x/3  =  45/3
     x=15

For this case, the first thing we must do is define a variable.

We have then:

x: unknown number.

We then have the following equation:

[tex] 2x + 10 = 40
[/tex]

To clear the value of x we follow the following steps:

Step 1:

Pass the value of 10 subtracting:

[tex] 2x = 40 - 10

2x = 30
[/tex]

Step 2:

Pass the value of 2 dividing:

[tex] x = \frac{30}{2}

x = 15
[/tex]

Answer:

a 2 step equation that equals 15 is:

[tex] 2x + 10 = 40 [/tex]