Jonny is solving this equation for n: 8+3n=20 his first step is just subtract eight from both sides of the equation. Why?
A. Eight is the first term in the equation.
B. It is attached to 3N by subtraction.
C. He needs to reverse the order of operations.
D. He needs to file the order of operations.
B. It is attached to 3N by subtraction.
The correct answer is B. It is attached to 3N by subtraction.
By subtracting 8 from both sides of the equation, Jonny is isolating the term 3n on one side of the equation. This allows him to solve for n by performing additional simplification steps.
The correct answer is B. It is attached to 3N by subtraction.
To explain further, let's analyze the equation 8 + 3n = 20:
8 is the constant term on the left side of the equation, and it is attached to 3n by addition. In order to isolate the variable n and solve for it, Jonny needs to get rid of the constant term. Since the constant term is attached to 3n by addition, he can subtract it from both sides of the equation.
By subtracting 8 from both sides, the equation becomes:
8 + 3n - 8 = 20 - 8
Simplifying both sides, we get:
3n = 12
Now the variable n is isolated on the left side of the equation, and Jonny can continue solving for n by performing the necessary operations.