ROZWIĄŻ
a) 2(x+3y)-(3x+y)=...
b) 3(2x+2)+(x-5y)=...
c) -3(3x-1)+(2x+y)+2(x-3y)=...
a) 2(x+3y)-(3x+y)= 2x+6y-3x-y=-x+5y
b) 3(2x+2)+(x-5y)=6x+6+x-5y=7x-5y+6
c)-3(3x-1)+(2x+y)+2(x-3y)=-9x+3+2x+y+2x-6y=-5x-5y+3
a) 2(x+3y)-(3x+y)=2x+6y-3x-y=-x+5yb) 3(2x+2)+(x-5y)=6x+6+x-5y=7x+6-5yc) -3(3x-1)+(2x+y)+2(x-3y)=-9x+3+2x+y+2x-6y=-5x+3-5yto jest poprawne. sprawdziłam jeszcze raz :) pozdrawiam
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a) 2(x+3y)-(3x+y)= 2x+6y-3x-y=-x+5y
b) 3(2x+2)+(x-5y)=6x+6+x-5y=7x-5y+6
c)-3(3x-1)+(2x+y)+2(x-3y)=-9x+3+2x+y+2x-6y=-5x-5y+3
a) 2(x+3y)-(3x+y)=2x+6y-3x-y=-x+5y
b) 3(2x+2)+(x-5y)=6x+6+x-5y=7x+6-5y
c) -3(3x-1)+(2x+y)+2(x-3y)=-9x+3+2x+y+2x-6y=-5x+3-5y
to jest poprawne. sprawdziłam jeszcze raz :) pozdrawiam