Toán Lớp 6: 12987-x-[(-720)+12471+247]ư=12987
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Toán Lớp 6: 12987-x-[(-720)+12471+247]ư=12987
Comments ( 2 )
$#Dream$
12987-x-[(-720)+12471+247]=12987
12987-x-774=12987
774-x=12987-12987
774-x=0
x=0+774
x=774
Vậy x=774
12987-x-[(-720)+12471+247]=12987
=>-x-[(-720)+12471+247]=12987-12987
=>-x-[(-720)+12471+247]=0
=>-x-(-720+12471+247)=0
=>-x+720-12471-247=0
=>-x-11998=0
=>-x=11998
=>x=-11998
Vậy x=-11998