When is subtraction always the first operation done in an expression?

A Never
B When it follows addition in an expression.
C When it is the first operation in an expression, from left to right.
D When it is in parentheses in an expression.

C

The order of operations tells us the correct steps for solving a math problem.
PEMDAS
1. Parentheses
2. Exponents
3. Multiplication
4. Division
5. Addition
6. Subtract
Subtraction is the last step, so if none of the 5 steps before it are in the equation, then that is when you will do subtraction first.

Answer Link

When is subtraction always the first operation done in an expression? A Never B When it follows addition in an expression. C When it is the first operation in an expression, from left to right. D When it is in parentheses in an expression.

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When is subtraction always the first operation done in an expression?

A Never
B When it follows addition in an expression.
C When it is the first operation in an expression, from left to right.
D When it is in parentheses in an expression.