1.{3(x-3)+10(2/3+y)=13{22(x-3)+5(2/3+y)=27
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1.{3(x-3)+10(2/3+y)=13{22(x-3)+5(2/3+y)=271.{3(x-3)+10(2/3+y)=13{22(x-3)+5(2/3+y)=271.{3(x-3)+10(2/3
1.{3(x-3)+10(2/3+y)=13{22(x-3)+5(2/3+y)=27
1.{3(x-3)+10(2/3+y)=13
{22(x-3)+5(2/3+y)=27
1.{3(x-3)+10(2/3+y)=13{22(x-3)+5(2/3+y)=27
3(x-3)+10(2/3+y)=13 ①
22(x-3)+5(2/3+y)=27 ②
②×2得:44(x-3)+10(2/3+y)=54 ③
③-①得:41(x-3)=41
(x-3) =1
x =4
把x=4带入①得:3+10(2/3+y)=13
y=1/3
所以,x=4
y=1/3
x=4
y=1/3
x=4
y=1/3
应该等于他
谁出的题?
有点麻烦!
应该对了
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