Question

Помогитее:((((! Дам 100 балл

Answer 1

$1) \: \: (12m - 5m) \times 4 = 252 \\ 7m = 252 \div 4 \\ 7m = 63 \\ m = \frac{63}{7} \\ m = 9$

$2) \: \: (4n + 3n) \times 11 = 154 \\ 7n = 154 \div 11 \\ 7n = 14 \\ n = \frac{14}{7} \\ n = 2$

$3) \: \: 45 \div (4m - m) = 3 \\ 3m = 45 \div 3 \\ 3m = 15 \\ m = \frac{15}{3} \\ m = 5$

$4) \: \: (19n - 6n) \div 4 = 26 \\ 13n = 26 \times 4 \\ 13n = 104 \\ n = \frac{104}{13} \\ n = 8$

$5) \: \: (16m + 5m) \div 18 = 7 \\ 21m = 7 \times 18 \\ 21m = 126 \\ m = \frac{126}{21} \\ m = 6$

$6) \: \: (17n - 8n) \times 13 = 351 \\ 9n = 351 \div 13 \\ 9n = 27 \\ n = \frac{27}{9} \\ n = 3$