Multiply 3 with 7.
3 * 7 = 21
The value of the gift card changed by -$21 dollars.
Add 60+15, divide by 3, subtract 2
9x + 1 + 7x - 9 = 5x - 11
16x - 8 = 5x - 11
11x - 8 = -11
11x = -3
-3/11 = x
You can call it pemdas .( peranthasis,expression,multiply,divide,add,subtract
