Решить первые три номера!. Created by ananev05. matematika-ru

Решить первые три номера!...

July 2022 1 7 Report

Решить первые три номера!

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Дон2006 1.а)4/7+(-11/14)=4/7-11/14=8/14-11/14=-3/14
б)-4/9-5/12=-16/36-15/36=-31/36
в)-14/25×20/21=-2/5×4/3=-8/15
г)14/9÷(-16/15)=-14/9×15/16=-7/3×5/8=-35/24=-1 11/24
2.-8/25×15/14-11/48÷(-7/8)=-12/35+11/48×8/7=-12/35+11/42=-72/210+55/210=-17/210
3.а)-8/19×13/15-8/19×2/15=-8/19×(13/15+2/15)=-8/19×15/15=-8/19×1=-8/19
б)24/25×37/43-24/25×(37/43-15/16)=24/25×37/43-24/25×37/43+24/25×15/16=24/25×(37/43-37/43)+24/25×15/16=24/25×0+24/25×15/16=24/25×15/16=3/5×3/2=9/10=0,9

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ananev05 Спасибо большое

Дон2006 не за что

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