If 5 is subtracted from a number, the result is 5. what is the number? 10 5 0 -5

it will be 10  it like 5+5=10

but this is subtracted we have to use 10-5=5

hopes this helps

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2