Question

Пожалуйста решите
1) (27,9-x):6,5=3,8
2)4*(9,6х-3,2)=6,4
3)28,98:(m-13,2)=4,6
4)6,3m+18,76=79,87
5)(k-45,6)*5,2=65,52
6)6,3+(y-8,2)=8
7)(m+2,3):6,7=8,4
8)72:(1,5a+1,7)=3,6
9)(43,6+k):2,4=26,5
10)a÷2,4-15,6=2,4
Только верно дам 18 балов

Answer 1

1)
$(27.9 - x) div 6.5 = 3.8 \ 27.9 - x = 3.8 times 6.5 \ 27.9 - x = 24.7 \ x = 27.9 - 24.7 = 3.2$
2)
$4 times (9.6x - 3.2) = 6.4 \ 9.6 x- 3.2 = 6.4 div 4 \ 9.6x - 3.2 = 1.6 \ 9.6x = 1.6 + 3.2 \ 9.6x = 4.8 \ x = frac{4.8}{9.6} = 0.5$
3)
$28.98 div (m - 13.2) = 4.6 \ m - 13.2 = frac{28.98}{4.6} \ m - 13.2 = 6.3 \ m = 6.3 + 13.2 = 19.5$
4)
$6.3m + 18.76 = 79.87 \ 6.3m = 79.87 - 18.76 \ 6.3m = 61.11 \ m = frac{61.11}{6.3} = 9.7$
5)
$(k - 45.6) times 5.2 = 65.52 \ k - 45.6 = frac{65.52}{5.2} \ k - 45.6 = 12.6 \ k = 12.6 + 45.6 = 58.2$
6)
$6.3 + (y - 8.2) = 8 \ y - 8.2 = 8 - 6.3 \ y - 8.2 = 1.7 \ y = 1.7 + 8.2 = 9.9$
7)
$(m + 2.3) div 6.7 = 8.4 \ m + 2.3 = 8.4 times 6.7 \ m + 2.3 = 56.28 \ m = 56.28 - 2.3 = 53.98$
8)
$72 div (1.5a + 1.7) = 3.6 \ 1.5a + 1.7 = frac{72}{3.6} \ 1.5a + 1.7 = 20 \ 1.5a = 20 - 1.7 \ 1.5a = 18.3 \ a = frac{18.3}{1.5} = 12.2$
9)
$(43.6 + k) div 2.4 = 26.5 \ 43.6 + k = 26.5 times 2.4 \ 43.6 + k = 63.6 \ k = 63.6 - 43.6 = 20$
10)
$a div 2.4 - 15.6 = 2.4 \ a div 2.4 = 2.4 + 15.6 \ a div 2.4 = 18 \ a = 18 times 2.4 = 43.2$

Answer 2

ответы сошлись, честно я не видел что уже есть ответы, поетому я не списывал