6.EE.B.7

Solve real-world and mathematical problems by writing and solving equations of the form *x* + *p* = *q* and *px* = *q* for cases in which *p*, *q* and *x* are all nonnegative rational numbers.

Solve one-step equations, both word problems and mathematical problems. Also, identify mistakes in solving one-step equations. Conclude by giving your students this challenge. Its prereqs include distributing and combining like terms, and being able to solve one-step equations.