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 follow the order of operations.
He needs to follow the order of operations.
He needs to reverse the order of operations.
He needs to reverse the order of operations.
8 is attached to 3n by subtraction.
8 is attached to 3 n by subtraction.
8 is the first term in the equation.
He needs to isolate the variable.
The correct answer is: 8 is the first term in the equation.
The correct response is "He needs to follow the order of operations."
When solving an equation, it is important to follow the order of operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division - left to right, Addition and Subtraction - left to right). The goal is to isolate the variable on one side of the equation.
In the equation: 8 + 3n = 20, the first step Jonny takes is to subtract 8 from both sides of the equation to get rid of the constant term. This is because subtraction is the inverse operation of addition. By doing so, he is left with 3n on one side of the equation, and 12 on the other side (20 - 8 = 12). This step helps to simplify the equation and bring it one step closer to solving for the variable.