去括号,并合并同类项 3x+1-2(4-x)
问题描述:
去括号,并合并同类项 3x+1-2(4-x)
答
3x+1-2(4-x)
=3x+1-8+2x
=5x-7
去括号,并合并同类项 3x+1-2(4-x)
3x+1-2(4-x)
=3x+1-8+2x
=5x-7