问题
解答题
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答案
(1)237+x=563,
237+x-237=563-237,
x=326;
(2)x-799=2019,
x-799+799=2019+799,
x=2818;
(3)2293-x=1817,
2293-x+x=1817+x,
1817+x-1817=2293-1817,
x=476.
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(1)237+x=563,
237+x-237=563-237,
x=326;
(2)x-799=2019,
x-799+799=2019+799,
x=2818;
(3)2293-x=1817,
2293-x+x=1817+x,
1817+x-1817=2293-1817,
x=476.