What number can be multiplied by 4 and subtracted by 3 to give me 135
34.5 . To figure this out, you would use algebra. 4x-3=135
To get rid of the 3, you would add 3 to both sides. Now you have 4x=138
To get rid of the 4, you would divide by 4. 138/4=34.5, so now you have x=34.5.