Jonny is solving this equation for n : 8 + 3n = 20 . His first step is to subtract 8 from both sides of the equation. Why?
options:
8 is the first term in the equation.
He needs to reverse the order of operations.
He needs to follow the order of operations.
8 is attached to 3n by subtraction
The correct answer is: 8 is attached to 3n by subtraction.
When solving an equation, the goal is to isolate the variable on one side of the equation. By subtracting 8 from both sides of the equation, Jonny is removing the constant term (8) from the left side so that only the variable term (3n) remains. This step allows him to more easily solve for n in the next steps.
Jonny subtracts 8 from both sides of the equation to isolate the term containing the variable, n.
The correct answer is: He needs to subtract 8 from both sides of the equation.
When solving an equation, the goal is to isolate the variable (in this case, n) on one side of the equation. In order to do that, we perform the same operation on both sides to maintain equality.
In this case, the equation is 8 + 3n = 20. To remove the 8 from the left side of the equation, we need to perform the inverse operation, which is subtraction. By subtracting 8 from both sides, we get:
(8 + 3n) - 8 = 20 - 8
Simplifying, we get:
3n = 12
Now, n is isolated on one side of the equation, and we can move on to the next step to solve for n.