Question

POTRZEBNE NA TERAZ DAM NAJ !!
1.Doprowadź do najprostszej postaci.
a) 2(3a-4b+c)-5(3a+b-2c)=
b)7(x+2y-3z)+4(2x-3y-5z)=
c)-3(-2a-4b-c)-6(a-2b-6c)=
d)-5(2x+2y-6z)-(x-7y-3z)
2.Doprowadź wyrażenia do najprostszej postaci:
a)-(2a-3b+5)+(4a-7b+3)-(-3a-2b-1)=
b)(4a+2b-7)-(a-3b-4)-(2a-b-3)=
c)-(-2a+5b-4)+(2a-3b-4)-(-3a-b+2)=
d)(-5a+b-3)-(2a-3b+5)-(4a-b-8)=

Answer 1

1.a.6a-8b+2c-15a-5b+10c= -9a-13b+12c
   b.7x+14y-21z+8x-12y-20z=15x+2y-41z
   c.6a+12b+3c-6a+12b+36c=24b+39c
   d.-10x-10y+30z-x+7y+3z= -11x-3y+33z
2.a.-2a+3b-5+4a-7b+3+3a+2b+1=5a-2b-1
   b.4a+2b-7-a+3b+4-2a+b+3=a+6b
   c.2a-5b+4+2a-3b-4+3a+b-2=7a-7b-2
   d.-5a+b-3-2a+3b-5-4a+b+8=-11a=5b