Question

Решите уравнение
1)6m+m-35=21
2)17n+14n-145=134
3)5n+9n+32=200
4)(x+57):7=
12
5)(161-y):16=9
6)112:(17+x)=4

Даю 100баллов

Answer 1

Ответ:

$6m + m - 35 = 21 \\ 7m = 21 + 35 \\ 7m = 56 \\ m = 8$

$17n + 14n - 145 = 134 \\ 31n = 134 + 145 \\ 31n = 279 \\ n = 9$

$5n + 9n + 32 = 200 \\ 14n = 200 - 32 \\ 14n = 168 \\ n = 12$

$(x + 57) \div 7 = 12 \\ x + 57 = 12 \times 7 \\ x + 57 = 84 \\ x = 84 - 57 \\ x = 27$

$(161 - y) \div 16 = 9 \\ 161 - y = 16 \times 9 \\ 161 - y = 144 \\ - y = 144 - 161 \\ - y = - 17 \\ y = 17$

$112 \div (17 + x) = 4 \\ 17 + x = 112 \div 4 \\ 17 + x = 28 \\ x = 28 - 17 \\ x = 11$