Question

5(2x-4)=7(x+1)-3 10x-9=21+2x+3x

Answer 1

5(2x-4)=7(x+1)-3                            10x-9=21+2x+3x

10x -20 = 7x +7 -3                            10x -9= 21 +5x

3x = 20 + 4                                        5x = 21 +9                             

3x = 24                                               5x =30                              

x = 24/3                                              x = 30/5                                    

x =8                                                     x = 6               

S={8}                                                   S={6}