6(x + 2) - 3( x -5) = 24 x=?
问题描述:
6(x + 2) - 3( x -5) = 24 x=?
答
6(x + 2) - 3( x -5) = 24
两边除以3
2(x+2)-(x-5)=8
2x+4-x+5=8
2x-x=8-4-5
x=-1