解方程:[(x-1):0.3] - [(x+2):0.5]=1.2

2025-04-04 08:29:17
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回答1:

[(x-1):0.3] - [(x+2):0.5]=1.2
10/3x-10/3-2x-4=1.2
10/3x-2x=10/3+4+1.2
4/3x=50/15+60/15+18/15
4/3x=128/15
x=32/5