A,B,C,D,E,F,G,H stand for 0 to 8.can you work it out A+B=C D+E=FA FG+H=GH GF=_______.A.24 B.28 C.21 D.18亲们,火速!

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A,B,C,D,E,F,G,H stand for 0 to 8.can you work it out A+B=C D+E=FA FG+H=GH GF=_______.A.24 B.28 C.21 D.18亲们,火速!
A,B,C,D,E,F,G,H stand for 0 to 8.can you work it out
A+B=C D+E=FA FG+H=GH GF=_______.A.24 B.28 C.21 D.18
亲们,火速!

A,B,C,D,E,F,G,H stand for 0 to 8.can you work it out A+B=C D+E=FA FG+H=GH GF=_______.A.24 B.28 C.21 D.18亲们,火速!
答案为21,其实很简单,因为是选择题,你就可以按照选择题的算法来求,观察选项A,B,D的十位数都是2,就假设G为2,带入第三个已知可知GH一定为20几,而FG和GF的关系可知,A,B,一定不对,在假如G为1,同上去验证,依旧可得,亲,你懂了么?