来自林中达的问题
120+______×8=280,△+□=200□÷△=4△=______□=______.
120+______×8=280,△+□=200□÷△=4△=______□=______.
1回答
2020-04-07 21:22
120+______×8=280,△+□=200□÷△=4△=______□=______.
120+______×8=280,△+□=200□÷△=4△=______□=______.
(1)设应填x, 120+x×8=280,120+8x-120=280-120, 8x=160, 8x÷8=160÷8, x...