1.10-4(x+3)=2(x-1).2.1/3(6x-3)-1/2(8x-4)=5.3.x-3(1-2x0=9.4.2(x-3)-3(x-5)=7(x-1) x=?
问题描述:
1.10-4(x+3)=2(x-1).2.1/3(6x-3)-1/2(8x-4)=5.3.x-3(1-2x0=9.4.2(x-3)-3(x-5)=7(x-1) x=?
答
1.10-4(x+3)=2(x-1)
10-4x-12=2x-2
6x=0
x=0
2.1/3(6x-3)-1/2(8x-4)=5.
2x-1-4x+2=5
2x=-4
x=-2
3.x-3(1-2x0=9.4.2(x-3)-3(x-5)=7(x-1) x=?
题目不清楚?x-3(1-2)=9.x=?2(x-3)-3(x-5)=7(x-1).x=?x-3(1-2)=9.x+3=9x=62(x-3)-3(x-5)=7(x-1)2x-6-3x+15=7x-78x=16x=2