October 2018 1 23 Report
A) (4x-3y+13)+(7x+8y-6)+(2y-5-8x)=
b) (5x-3y+1)+(2y-x-7)+(12+6y-15x)=
c) (a+10b-g)+(3a-5b+4c)+(2c+b-6)=
d) (8xy-2yz)+(2xy-z+6yz)+(9yz-7yz-3z)=

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