1. The problem is to understand and solve a Grade 7 level math question, but since no specific problem was given, let's explain a common Grade 7 algebra concept: solving simple linear equations. 2. The general form of a linear equation is $ax + b = c$, where $a$, $b$, and $c$ are numbers, and $x$ is the variable we want to find. 3. To solve for $x$, we use the rule: whatever we do to one side of the equation, we must do to the other side to keep it balanced. 4. For example, if we have $3x + 5 = 20$, we first subtract 5 from both sides: $$3x + 5 - 5 = 20 - 5$$ which simplifies to $$3x = 15$$ 5. Next, we divide both sides by 3 to isolate $x$: $$\frac{\cancel{3}x}{\cancel{3}} = \frac{15}{3}$$ which simplifies to $$x = 5$$ 6. So, the solution to $3x + 5 = 20$ is $x = 5$. This method applies to all simple linear equations.