0.4x+0.9⼀0.5-0.03+0.02x⼀0.03=x-5⼀2

"尀"是分数线
2024-12-15 07:10:35
推荐回答(1个)
回答1:

0.4x+0.9/0.5-0.03+0.02x/0.03=x-5/2
0.8x+1.8-1-2/3x=0.5x-2.5
11/30x=3.3
x=9