Question

Найдите решения уравнений (35-36): 2) 9,26 + x = 13,1; 35. 1) x+8,34 = 10; 4) 6,2 + 2 6 x = 11; 5) x + 71 - 72; 35 13 7) x 19,5 = 2,85; 121 9) x - 31 13 9 28 3) x + 27 ²/ x + 27² = 52; 10) 81 6) 402 + 8) 40,02 - x = 37,7; 315 x = 79 %/1. 6 - 6115 пж​

Answer 1

Ответ:

Пошаговое объяснение:

1) x+8,34 = 10;

x = 10 - 8,34

x = 1,66

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2) 9,26 + x = 13,1

x = 13,1 - 9,26

x = 3,84

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$3)x +27\frac{8}{9} =52\\ \\ x=52-27\frac{8}{9} \\ \\ x=51\frac{9}{9} -27\frac{8}{9}\\ \\ x=24\frac{1}{9}$

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$4)6,2+\frac{2}{35} x=11\\ \\ \frac{2}{35}x=11-6,2\\ \\ \frac{2}{35} x=4,8\\ \\ x=4,8:\frac{2}{35} \\ \\ x=4,8*\frac{35}{2} \\ \\ x=2,4*35\\ x=84$

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$5)x+71\frac{6}{13} =72\\ \\ x=72-71\frac{6}{13} \\ \\ x=71\frac{13}{13} -71\frac{6}{13} \\ \\ x=\frac{7}{13}$

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$6)40\frac{5}{12} +x=61\frac{4}{15} \\ \\ x=61\frac{4}{15} -40\frac{5}{12} \\ \\ x=61\frac{16}{60} -40\frac{25}{60} \\ \\ x=60\frac{76}{60} -40\frac{25}{60} \\ \\ x=20\frac{51}{60}$

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7) x - 19,5 = 2,85

x = 2,85 + 19,5

x = 22,35

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8) 40,02 - x = 37,7

x = 40,02 - 37,7

x = 2,32

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$9)x-31\frac{4}{21} =13\frac{9}{28} \\ \\ x=13\frac{9}{28} +31\frac{4}{21} \\ \\x= 13\frac{27}{84} +31\frac{16}{84} \\ \\ x=44\frac{43}{84}$

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$10)81\frac{5}{6} -x=79\frac{3}{4} \\ \\ x=81\frac{5}{6} -79\frac{3}{4}\\ \\ x=81\frac{10}{12} =79\frac{9}{12} \\ \\ x=2\frac{1}{12}$