4(a+b+c)==28/9 3a-4b+5c===9/12 7a+9c===37/12 |____(1) 11(a+b+c)==77/12 7a-11b-13c== -7/12 9a-c==35/12 81a-9c==315/12 88a==352/12 a==1/3 c==1/12 a+c=5/12 72 viewsMr᭄jituᴮᴼˢˢ࿐ Ǥuקtα, 15:41
