A) 4*(a+2b-3c)-2*(2a-3b+4c)= ?
B) 3*(-3a-2b+4c)-(a-b-c)= ?
C) -(2x+y-z)+(2x-3y+5z)= ?
A) 4(a+2b+3c)-2(2a-3b+4c)=4a+8b+12c-4a+6b-8c=14b+4c
B) 3(-3a-2b+4c)-(a-b-c)=-9a-6b+12c-a+b+c=-8a-5b+13c
C) -(2x+y-z)+(2x-3y+5z)=-2x-y+z+2x-3y+5z=-4y+6z
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A) 4(a+2b+3c)-2(2a-3b+4c)=4a+8b+12c-4a+6b-8c=14b+4c
B) 3(-3a-2b+4c)-(a-b-c)=-9a-6b+12c-a+b+c=-8a-5b+13c
C) -(2x+y-z)+(2x-3y+5z)=-2x-y+z+2x-3y+5z=-4y+6z