270 + 9x = 90 × 45 to solve the equation

270 + 9x = 90 × 45 to solve the equation


270+9x=90×45
270+9x=4050
9x=4050-270
9x=3780
x=3780/9
x=420



Find the 9x + 3 = (x + 3) * 24 solution of this equation


9x+3=(x+3)*24
9x+3=24x+72
9x-24x=72-3
-15x=69
x=-69/15
x=-23/5