Jawabanmu

2014-09-02T19:53:07+07:00

(3-17x+35z) + (4x+23y-9) = 3 - 17x + 35z + 4x + 23y - 9

                                          = -17x + 4x +23y + 35z + 3 - 9 

                                          = -13x + 23y + 35z - 6

(5z + 3) - (2z - 7) = 5z + 3 - 2z + 7
= 3z +10