作业帮能简算的要简算：[2.74-0.56×(2又5/12-1又19/60+2.275)]÷17/20
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/27 20:54:55
![能简算的要简算：[2.74-0.56×(2又5/12-1又19/60+2.275)]÷17/20](/uploads/image/z/54026-26-6.jpg?t=%E8%83%BD%E7%AE%80%E7%AE%97%E7%9A%84%E8%A6%81%E7%AE%80%E7%AE%97%EF%BC%9A%5B2.74-0.56%C3%97%282%E5%8F%885%2F12-1%E5%8F%8819%2F60%2B2.275%29%5D%C3%B717%2F20)
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能简算的要简算：[2.74-0.56×(2又5/12-1又19/60+2.275)]÷17/20
能简算的要简算：[2.74-0.56×(2又5/12-1又19/60+2.275)]÷17/20
能简算的要简算：[2.74-0.56×(2又5/12-1又19/60+2.275)]÷17/20
【2.74-0.56×（29/12-79/60+91/40）】÷17/20
=【2.74-14/25×27/8】÷17/20
=【2.74-1.89】÷17/20
=0.85÷17/20
=0.85÷0.85
=1