
Justice R. answered 09/11/20
Child Development Student & Writer Teaching to Multiple Intelligences
I respectfully disagree with Nathania's answer. (EDIT: Actually, Nathania was onto something I wasn't. See my comment below. I would describe this as:
15: fifteen
-: minus (subtraction)
1.5: one point five
/: divided by, or "over." If it's written as a fraction, say "over." If not, say "divided by." (If the textbook/worksheet itself uses "/," not a fraction bar or a division sign, I would say "over.")
d: This is a variable, so Nathania is right that it's "a number," but we need to be specific about which number it is. Keep this the same: just call the variable "d."
"Fifteen minus one point five over d." EDIT: "Fifteen minus the quotient of one point five over d." See my comment for an explanation, and thank you Nathania.

Justice R.
I need to revisit this, actually, because Nathania's answer conveyed something mine didn't: The order of operations. I amend my recommendation to "Fifteen minus the quotient of one point five over d."09/11/20