Learning goals: Teacher Facing Explain (orally and in writing) how to solve an equation of the form $x+p=q$ or $px=q$, where $p$, $q$, and $x$ are rational numbers. Generalize (orally) the usefulness of additive inverses and multiplicative inverses for solving equations of the form $x+p=q$ or $px=q$. Generate an equation of the form $x+p=q$ or $px=q$ to represent a situation involving rational numbers. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 7.5 Rational Number Arithmetic, Grade 7.