1/12+1/18+5/18+3/12 помогите

Question

1/12+1/18+5/18+3/12 помогите

Answer 1

3/36+2/36=5/36
10/36+9/36=19/36
5/36+19/36=24/36=8/12=2/3

Answer 2

= ( 1/12 + 3/12 ) + ( 1/18 + 5/18 ) = 4/12 + 6/18 = 1/3 + 1/3 = 2/3