Solve y = mx + b for x. divide each side by m first. provide the steps to get the answer.

Since xx is on the right side of the equation, switch the sides so it is on the left side of the equation.mx+b=ymx+b=y Since bb does not contain the variable to solve for, move it to the right side of the equation by subtracting bb from both sides.mx=−b+ymx=-b+y Divide each term by mm and simplify.Tap for fewer steps...Divide each term in mx=−b+ymx=-b+y by mm .mxm=−bm+ymmxm=-bm+ym
Reduce the expression by cancelling the common factors.
Cancel the common factor.mxm=−bm+ymmxm=-bm+ym Divide xx by 11 to get xx .x=−bm+ymx=-bm+ym.
 So if it's correct, rank as brainliest answer! :) 

So you have your equation y=mx+b, then you divide both sides by m, which gives you y/m=x+b, then you subtract b from both sides, which gives you you're answer of y/m-b=x.
Hope this helps