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7+2=
4
4
+5        8-4=
10
10
-6.
分析:先求出7+2=9,然后根据:一个加数=和-另一个加数,解答即可;
先求出8-4=4,然后根据:被减数=差+减数,解答即可.
解答:解:7+2-5=4;
8-4+6=10;
故答案为:4,10.
点评:解答此题的关键是:先求等式左面的得数,进而根据加数、加数、和及被减数、减数、差之间的关系解答.
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