7(X+3)-2(x-5)+(X-1)-8=0
问题描述:
7(X+3)-2(x-5)+(X-1)-8=0
答
7(X+3)-2(x-5)+(X-1)-8=0
7X+21-2X+10+X-1-8=0
7X-2X+X=-21-10+1+8
6X=-22
X=-11/3
答
7(X+3)-2(x-5)+(X-1)-8=0
7x+21-2x+10+x-1-8=0
6x+22=0
6x=-22
x=-11/3