│2a+3│+(3b+5)²+│4c-3│=0 求a-b+c的值
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│2a+3│+(3b+5)²+│4c-3│=0 求a-b+c的值
│2a+3│+(3b+5)²+│4c-3│=0 求a-b+c的值
│2a+3│+(3b+5)²+│4c-3│=0 求a-b+c的值
2a+3=0
3b+5=0
4c-3=0
a=-3/2
b=-5/3
x=3/4
a-b+c
=-3/2+5/3+3/4=11/12