The difference of a number and 7 is the same as 45 less the number. find the number

Answer 1

difference means subtraction, is means equals, and less than the number is subtraction. so...

x-7=45-x

2x= 52 (solve for number)

x=26 (divide by two)

you can use any variable you choose, as long as the left and right part of the equation has the same variable

Answer 2

n - 7 = 45 - n
2n = 52
n = 26