计算:88+95+92+89+86+91+90+88+92+90+86+92+87+89+91+93+88+94+91+8

计算:88+95+92+89+86+91+90+88+92+90+86+92+87+89+91+93+88+94+91+87
2025-05-12 14:58:24
推荐回答(1个)
回答1:

解:原式=90×2+(-2+5+2-1-4+1-2+2-4+2-3-1+1+3-2+4+1-3)=1799