1.5×+0.2×(5-2×)=8.7

1.5×+0.2×(5-2×)=8.7
2025-02-23 23:17:00
推荐回答(1个)
回答1:

1.5×+0.2×(5-2×)=8.7
1.5x+1-0.4x=8.7
1.1x=7.7
x=7