Question

Sx+tx=r
How to solve?

Answer 1

solve for x.

sx+tx=r

Factor out variable x.

x(s+t)=r

Divide both sides by s+t.


`\sf (x(s+t))/(s + t) = (r)/(s + t) \\ \\ \\ \huge{\boxed{x =(r)/(s + t)}}`