subtract 12x+3y-z from the sum of 7x+5y-4z+5 and 7x-8z+8
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[{(7x+5y-4z+5)+(7x-8z+8)} -(12x+3y-z)]
=>[{7x+5y-4z+5+7x-8z+8} -(12x+3y-z)]
=>[14x+5y-12z+13-(12x +3y-z)]
=>[14x+5y-12z +13-12x-3y+z]
=>2x+2y-11z+13
=>[{7x+5y-4z+5+7x-8z+8} -(12x+3y-z)]
=>[14x+5y-12z+13-(12x +3y-z)]
=>[14x+5y-12z +13-12x-3y+z]
=>2x+2y-11z+13
seherfatimah:
thanks
alooooooot
älot I mean
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