Your answer will be 7
If you make an equation it will look like 3x-28+3x-30+x=33
If you add all the x’s and constant numbers you’ll get 7x -58=33 next you add 58 to 33 because it is crossing the = and you’ll get 91
7x/7 and 91/7 is x=13
3•7-28= -7 but the number CANNOT be negative so I’ll be 7