Question

Solve for x 0.03x+20=0.07x+5

Answer 1

0.03x+20=0.07x+5                            original equation
0.03x+20-0.03x=0.07x+5-0.03x       subtract  0.03x from both sides to combine                                                                 like terms
20=0.04x+5
20-5=0.04x+5-5                                subtract 5 from both sides
15 = 0.04x                                          
15/0.04 = 0.04x/0.04                         divide both sies by 0.04 to get x alone.
375 = x                                               <-------WOOOOOO! theres the answer!