Answer
See explanation
Work Step by Step
Simple equations (like linear equations) are often used to model and solve everyday problems, where you’re looking for an unknown value.
Here’s how it works in practice:
You want to find the cost of one soft drink given that $9$ drinks cost $72$ pesos.
Let's note by $R$ the cost of one drink.
1. Since $9$ drinks cost $72$ pesos, the equation is
$$9𝑅=72.$$
2. Dividing both sides by $9$ gives
$$\frac{9R}{9}=\frac{72}{9}$$
$$R=8.$$
Therefore, each soft drink costs $8$ pesos.
