Question

3a+a=20 6n-n=25 17/18-m=1/12 Помогитеееее

Answer 1

1)3а+а=20 4а=20 а=5  2)6n-n=25 5n=25 n=5  3)17/18-m=1/12 -m=1/2-17/18 -m=-4/9 m=4/9

Answer 2

$3a + a = 20 \ 4a = 20 \ a = 5 \ \ 6n - n = 25 \ 5n = 25 \ n = 5 \ \ frac{17}{18} - m = frac{1}{12} \ \ - m = frac{1}{12} - frac{17}{18} \ \ - m = - frac{31}{36} \ \ m = frac{31}{36}$