Question

sean A y B dos ángulos suplementarios donde m ángulo A=7x+4 y M ángulo B=4x+9
hallen la medida del ángulo B

Answer 1

Siendo suplementarios
         A + B = 180°

     (7x + 4) + (4x + 9) = 180
           7x + 4x + 4 + 9 = 180
                          11x = 180 -13
                                 = 167
                              x = 167/11

                              B = 4(167/11) + 9
                                 = 668/11 + 9
                                 = (668 + 9*11)/11
                                 = 767/11
                                 = 759/11 + 8/11
                                 = 69 + 0.727272...
                                                               B = 60.727272... °