mutiaralangit
Jika dijumlah : a.6p-5q-2r dan -8p+6q+9r =(6p-5q-2r)+(-8p+6q+9r) =6p-5q-2r-8p+6q+9r =6p-8p-5q+6q-2r+9r =-2p+q+7r b. 2x + 15y - 7 oleh 5x - 9y + 3 (2x+15y-7)+(5x-9y+3) = 2x+15y-7+5x-9y+3 = 2x+5x+15y-9y-7+3 = 7x+6y-4
Jika dikurangi : a. 6p-5q-2r dan -8p+6q+9r (6p-5q-2r)-(-8p+6q+9r) =6p-5q-2r+8p-6q-9r =6p+8p-5q-6q-2r-9r =14p-11q-11r b. 2x+15y-7 oleh 5x-9y+3 (2x+15y-7)-(5x-9y+3) = 2x+15y-7-5x+9y-3 = 2x-5x+15y+9y-7-3 = -3x+24y-10
6p - 5q+8p - 6q - 9r
6p + 8p - 5q -6q - 9r
= 14p - 1 - 9r
a.6p-5q-2r dan -8p+6q+9r
=(6p-5q-2r)+(-8p+6q+9r)
=6p-5q-2r-8p+6q+9r
=6p-8p-5q+6q-2r+9r
=-2p+q+7r
b. 2x + 15y - 7 oleh 5x - 9y + 3
(2x+15y-7)+(5x-9y+3)
= 2x+15y-7+5x-9y+3
= 2x+5x+15y-9y-7+3
= 7x+6y-4
Jika dikurangi :
a. 6p-5q-2r dan -8p+6q+9r
(6p-5q-2r)-(-8p+6q+9r)
=6p-5q-2r+8p-6q-9r
=6p+8p-5q-6q-2r-9r
=14p-11q-11r
b. 2x+15y-7 oleh 5x-9y+3
(2x+15y-7)-(5x-9y+3)
= 2x+15y-7-5x+9y-3
= 2x-5x+15y+9y-7-3
= -3x+24y-10