Jonny is solving this equation for n : 8 + 3n = 20 . His first step is to subtract 8 from both sides of the equation. Why?(1 point)
Responses
He needs to reverse the order of operations.
He needs to reverse the order of operations.
8 is the first term in the equation.
8 is the first term in the equation.
He needs to follow the order of operations.
He needs to follow the order of operations.
8 is attached to 3n by subtraction.
8 is the constant term on the left side of the equation and by subtracting it, Jonny is isolating the variable term, 3n, on one side of the equation.
The correct response is:
8 is the first term in the equation.
Explanation: Jonny needs to subtract 8 from both sides of the equation as the number 8 is the first term in the equation 8 + 3n = 20. By subtracting 8, Jonny can isolate the variable n and continue solving the equation.
The correct answer is "He needs to subtract 8 from both sides of the equation."
When solving an equation, it is important to isolate the variable (in this case, n) by performing mathematical operations on both sides of the equation. By subtracting 8 from both sides, Jonny is trying to get rid of the constant term (8) on the left side of the equation, so that he can isolate the variable term (3n).
This step is necessary in order to simplify the equation and make it easier to solve for n. After subtracting 8 from both sides, Jonny will have the equation 3n = 12, where he can then proceed to solve for n by dividing both sides by 3.