1)2/15: (1/5x-1/3)-1/12=1/24 2) 2/9: (5/9x-1/2)+1/7=1/3 - вопрос №511638112151513112124229591217131723 от nizomabdurahmon 26.02.2023 13:42

Question

Математика: 1)2/15: (1/5x-1/3)-1/12=1/24 2) 2/9: (5/9x-1/2)+1/7=1/3 ответы 1) 7 2) 3 / -это знак обыкновенной дроби 30 побыстрее

nizomabdurahmon · Answer

№12/15÷(1/5х-1/3)-1/12=1/242/15÷(1/5х-1/3)=1/24+1/122/15÷(1/5х-1/3)=1/24+2/242/15÷(1/5х-1/3)=3/242/15÷(1/5х-1/3)=1/81/5х-1/3=2/15÷1/81/5х-1/3=2/15×8/11/5х-1/3=16/151/5х-1/3=1 1/151/5х=1 1/15+1/31/5х=1 1/15+5/151/5х=1 6/151/5х=1 2/5х=1 2/5÷1/5х=7/5÷1/5х=7/5×5/1х=72/9÷(5/9х-1/2)+1/7=1/32/9÷(5/9х-1/2)=1/3-1/72/9÷(5/9х-1/2)=7/21-3/212/9÷(5/9х-1/2)=4/215/9х-1/2=2/9÷4/215/9х-1/2=2/9×21/45/9х-1/2=1/3×7/25/9х-1/2=7/65/9х-1/2=1 1/65/9х=1 1/6+1/25/9х=1 1/6+3/65/9х=1 4/65/9х=1 2/3х=1 2/3÷5/9х=5/3×9/5х=1/1×3/1х=3...