Question

When is subtraction always the first operation done in an expression?
a. When it is the first operation in an expression, from left to right.
b. When it follows addition in an expression.
c. When it is in parentheses in an expression.
d.Never

Answer 1

a) when it is the first operation in an expression , from left to right

Answer 2

Answer:

you i dont know$\in$

4=+34+

Step-by-step explanation: