Question

156. Решите уравнение:
1) 6т +т – 35 = 21;
2) 17n +14п – 145 = 134;
3) 5n +9n + 32 = 200;​

Answer 1

Ответ:

$1)7t - 35 = 21 \\ 7t = 21 + 35 \\ 7t = 56 \\ t = 56 \div 7 \\ t = 8$

$2)31n - 145 = 134 \\ 31n = 134 + 145 \\ 31n = 279 \\ n = 279 \div 31 \\ n = 9$

$3)14n + 32 = 200 \\ 14n = 200 - 32 \\ 14n = 168 \\ n = 168 \div 14 \\ n = 12$