Negative X + 3 + 3X equals 23

X = 10

Step-by-step explanation:

First you subtract - X from 3x to get 2x + 3 = 23

then you subtract 3 from both sides to get 2x = 20

then finally, you divide both sides by two to get x = 10

And if you plug 10 back in you get - 10 + 3 + 30 = 23

-10 + 3 = - 7

-7 + 30=23

23=23