найдите корни уравнений 1) (101 4/7 - х) : 29= 1/14; 2) (68,7 + х) : 28 1/90=3; 3) 6 17/27: ( х - 76 2/9) = 1 2/3; 4) 131 6/35: ( 24,3+х) =2. Created by Виктория80805. matematika-ru

35: ( 24,3+х) =2...

June 2022 1 9 Report

найдите корни уравнений 1) (101 4/7 - х) : 29= 1/14; 2) (68,7 + х) : 28 1/90=3; 3) 6 17/27: ( х - 76 2/9) = 1 2/3; 4) 131 6/35: ( 24,3+х) =2

Answers & Comments

гюйс

Verified answer

(101 4/7 - х):29=1/14
101 4/7 - х=1/14 * 29
101 4/7 - х=2 1/14
х=101 4/7 - 2 1/14
х=101 8/14 - 2 1/14
х=99 7/14
х=99 1/2=99,5

(68,7+х):28 1/90=3
68,7+х=3 * 28 1/90
68,7+х=84 1/30
х=84 1/30 - 68 7/10
х=84 1/30 - 68 21/30
х=15 1/3

.
6 17/27 :(х-76 2/9)=1 2/3
х -76 2/9=6 17/27 : 1 2/3
х-76 2/9=179/27 * 3/5
х - 76 2/9=179/45
х=3 44/45 +76 2/9
х=3 44/45+76 10/45
х=80 9/45
х=80 1/5=80,2

.
131 6/35 :(24,3+х)=2
24,3+х=131 6/35 :2
24,3+х=65 1/70
х=65 1/70 - 24 3/10
х=65 1/70 - 24 21/70
х=40 5/7

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