2(x-3)-3(-x+1)怎样解?–a+2(a-1)-(3a+5)求解！_数学解答

2(x-3)-3(-x+1)怎样解?
–a+2(a-1)-(3a+5)求解！

人气：391 ℃　时间：2020-09-20 00:49:49

解答

2(x-3)-3(-x+1)
=2x-6-(-3x+3)
=2x-6+3x-3
=5x-9
-a+2(a-1)-(3a-5)
=-a+2a-2-3a+5
=-2a+3
望采纳