Помогите решить 9/c+5/c,a/c+4/c,a/c+b/3c,1/c+3/2c,d/ac+c/ad,2a/3c+a/6c

Question

Помогите решить 9/c+5/c,a/c+4/c,a/c+b/3c,1/c+3/2c,d/ac+c/ad,2a/3c+a/6c

Answer 1

9/с+5/с=(9+5)/с=14/с
а/с+4/с=(а+4)/с
а/с+b/3c=3a/3c+b/3c=(3a+b)/3c
1/c+3/2c=2/2c+3/2c=5/2c
d/ac+c/ad=d^2/acd+c^2/acd=(d^2+c^2)/acd
2a/3c+a/6c=4a/6c+a/6c=(4a+a)/6c=5a/6c