Step-by-step explanation:5x-(x+3)=1/3(9x+18)-55x-x+3=3x+6-51/3 multiplied by 9/1 is three because if you take away the ones and put your problem like this: 9/3, you'll get 3.1/3 multiplied by 18/1 is six because if you take away the ones and switch to division, it'll look like this: 18/3. 18/3 is 6.5x-1x+3=3x+6-5If a variable is alone, you should - in this case - put a one before it, but if the variable is alone you should know that it's automatically a one.4x+3=3x-16-5=1 Simple math problem, probably self explanatory4x+3=3x-1Subtract 3x from 4x and you'll get 1x because 4-3 is 1.1x+3=-1Then you add 3 to -1 which is 2.The answer is 1x=2Or you could've done:4x+3=3x-1-4x -4x 3=-1x-1 +-1 +-12=1xIt's the same answer, but all I did was subtract the 4x from the 4x and 3x.