Question

решите уравнение 1) 2⅗ :(x+1 3/14)-1⅖=⅓ 2)(x-⅜)×8/35+2 2/7=2⅗​

Answer 1

Ответ:

Пошаговое объяснение:

1) 2⅗ :(x+1 3/14)-1⅖=⅓

2 2/3:(x+1 3/14)-1 2/5 = 1/3;

2 2/3:(x+1 3/14)=1/3+1 2/5;

2 2/3:(x+1 3/14)=5/15 + 1 6/15;

2 2/3:(x+1 3/14)=1 11/15;

x+1 3/14=2 2/3 : 1 11/15;

x+1 3/14=8/3*15/26;

x+1 3/14=20/13;

x+1 3/14=1 7/13;

x=1 7/13-1 3/14;

x= 1 98/182-1 39/182 -

x=59/182.

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2)(x-⅜)×8/35+2 2/7=2⅗​

(x-3/8)*8/35+2 2/7=2 3/5;

(x-3/8)*8/35=2 3/5 - 2 2/7;

(x-3/8)*8/35 = 2 21/35 - 2 10/35;

(x-3/8)*8/35=11/35;

x-3/8=11/35:8/35;

x-3/8=11/8;

x=11/8+3/8;

x=14/8=7/4=1 3/4.