Question

помогите с математикой!
1) (12m-15m) •4=252
2) (4n+3n) • 11=154
3) 45: (4m-m) =3

4) (19n-6n):4=26
5) (16m+5m) :18=7
6) (17n-8n) •13=351

Answer 1

Ответ:

$1)(12x - 15x) \times 4 = 252 \\ - 3x = 63 \\ x = 21 \\ 2)(4x + 3x) \times 11 = 154 \\ 7x = 14 \\ x = 2 \\ 45 \div (4x - x) = 3 \\ 3x = 135 \\ x = 45$

Answer 2

1) m=21
2) n=2
3) m=5
4) n=8
5) m=6
6) n=3