30除以X+25=85 1.4X乘以8-2X等于6 410-3X等于170 0,273除以X=0.35 X乘于1.8=0.972 X除于0.756=90

问题描述:

30除以X+25=85 1.4X乘以8-2X等于6 410-3X等于170 0,273除以X=0.35 X乘于1.8=0.972 X除于0.756=90
30除以X+25=85 1.4X乘以8-2X等于6 410-3X等于170 0,273除以X=0.35 X乘于1.8=0.972 X除于0.756=90

30/X=85-25
30/X=60
X=30/60
X=0.5
11.2X-2X=6
9.2X=6
X=6/9.2
X=3/46