2X+3X+4X=18
问题描述:
2X+3X+4X=18
答
2X+3X+4X=18
(2+3+4)x=18
9x=18
x=2
2X+3X+4X=18
2X+3X+4X=18
(2+3+4)x=18
9x=18
x=2