Zredukuj podane wyrażenia algebraiczne:
A. (7a+4b-2c+5)+(4a-6b+5c-8)
B. -5a+(6b-c+9)-(5b+8c-5)+6a
C. 6b+c-5a+9-(8a+2b-5c+20)
D. -(-5a+3b-4c-6)-(-8b+4a-5)+8c
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a. 7a+4b-2c+5+4a+6b+5c-8=11a+10b+3-3
b.-5a+6b-c+9-5b-8c+5+6a=a+b-9c+14
c.6b+c-5a+9-8a-2b+5c-20=-13a+4b+6c-11
d.5a+3b-4c-6+8b+4a-5+8c=9a+11b-4c-11
A. (7a+4b-2c+5)+(4a-6b+5c-8)=7a+4b-2c+5+4a-6b+5c-8=11a-2b+3c-3
B. -5a+(6b-c+9)-(5b+8c-5)+6a=-5a+6b-c+9-5b-8c+5=-5a+1b-9c+14
C. 6b+c-5a+9-(8a+2b-5c+20)=6b+c-5a+9-8a-2b+5c-20=4b+6c-13a-11
D. -(-5a+3b-4c-6)-(-8b+4a-5)+8c=5a-3b+4c+6+8b-4a+5+8c=1a+5b+12c+11
A. (7a+4b-2c+5)+(4a-6b+5c-8)=11a-2b+3c-3
B. -5a+(6b-c+9)-(5b+8c-5)+6a=-5a+6b-c+9-5b-8c+5=-5a+b-9c+14
C. 6b+c-5a+9-(8a+2b-5c+20)=6b+c-5a+9-8a-2b+5c-20=-13a+4b+6c-11
D. -(-5a+3b-4c-6)-(-8b+4a-5)+8c=5a-3b+4c+6+8b-4a+5+8c=a+5b+12c+11
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