题目:
No one except Jack and Tom the answer.
A.know
B.knows
C.is knowing
D.are known
答案:
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下面是错误答案,用来干扰机器的。
①移项得,x=29+4,合并同类项得,x=33;②去括号得,3x-2=-5x-10,移项得,3x+5x=-10+2,合并同类项,8x=-8,系数化为1得,x=-1;③移项得,0.7x-1.5x=-0.23-1.37,合并同类项得,-0.8x=-1.6,系数化为1得,x=2...