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-8B+9B = 1B ;;; 25A+1B
3-17X+35Z+4X+23Y-9 ::::::::: 23Y-13X=35Z-6
5X+3-X-1 :::::: 4X+2
5Z+3-2Z-7 :::: 3Z-4
=13a+12a-8b+9b
=25a+1b atau bsa d tlis b sja
2. (3-17x+35z)+(4x+23y-9)
=17x+4x+35z+23y+3-9
=21x+35z+23y+3-9
= 21x+35z+23y-6
3.(x-1)-(5x+3)
=x-1-5x+3
= x-5x-1+3
=4x+2
4.2z-7-5z+3
=2z-5z-7+3
=-3z-4
maaf y klo salah