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(2x-y+1)+(x-6y+4)=2x-y+1+x-6y+4=3x-7y+5
(2x-y+1)-(x-6y+4)=2x-y+1-x+6y-4=x-5y-3
(x-6y+4)-(2x-y+1)=x-6y+4-2x+y-1=-x-5y+3
zad 2 redukcja
2a-b+4ab+3b-a=a+2b+4ab
-4a+2b-3+2b+4a+5=4b+2
3,5x-2,5y-1,5y+3,5x=7x-4y
15x-3y+5-11x+7y+4+y+x=5x+5y+9
liczę na naj ;)
a) 2x-y+1+(x-6y+4)= 2x-y+1+x-6y+4=3x-7y+5
b) 2x-y+1-(x-6y+4)= 2x-y+1-x+6y-4= x+5y-3
c) x-6y+4-(2x-y+1)= x-6y+4-2x+y-1=-x-5y+3
zad2
a)= a+2b+4ab
b)= 4b+2
c) =7x-4y
d)= 5x+5y+9
a)A+B
2x-y+1+x-6y+4=3x-7y+5
b)A-B
2x-y+1-(x-6y+4)=2x-y+1-x+6y-4=x+5y-3
c)B-A
x-6y+4-(2x-y+1)=x-6y+4-2x+y-1=-x-5y+3
zad.2
a)2a-b-4ab+3b-a=a+2b-4ab
b)-4a+3b-3+2b+4a+5=5b+2
c)3,5x-2,5y-1,5y+3,5x=7x-4y
d)15x-3y+5-11x+7y+4+y+x=5x+5y+9