0.4x-15.7=2.3解方程 6(x-2⼀3)=4⼀5

2025-06-23 19:58:53
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回答1:

0.4x=2.3+15.7
0.4x=18
x=45
6(x-2/3)=4/5
x-2/3=2/15
x=4/5