Jonny is solving this equation for n : 8 + 3n = 20 . His first step is to subtract 8 from both sides of the equation. Why?
8 is the first term in the equation.
He needs to follow the order of operations
He needs to reverse the order of operations.
8 is attached to 3n by subtraction.
The correct reason is: 8 is attached to 3n by subtraction.
The reason Jonny subtracts 8 from both sides of the equation is because he wants to isolate the variable, n, on one side of the equation. By subtracting 8 from both sides, he is able to eliminate the constant term on the left side of the equation, leaving only 3n. This allows him to then solve for n by dividing both sides by 3.
The reason Jonny subtracts 8 from both sides of the equation is because 8 is being added to the left side of the equation. By subtracting 8, he eliminates it from the left side and balances the equation. When solving equations, the goal is to isolate the variable on one side of the equation, and by subtracting 8 from both sides, Jonny is able to do just that.
