Question

Use the numbers 2, 11, 13, and 15 to write an equation.Replace one of the numbers in your equation in Exercise 8 with thevariable y. Determine whether 2, 11, 13, or 15 is a solution of yourequation.

Answer 1

Given:

`2\cdot11+13-15=20`

say we replace 13 with y, then the resulting equation is:

`2\cdot11+y-15=20`

solving,