Помогите срочно плиииииз номер 9 В и Г Номер 7 а

9 г в 50/75 и 20/120 = 2*2/3+1/6=4/6+1/6=5/66/16 и 12/27=9*3/8+8*4/9=27/72+32/72=59/727а    3/29+1/29+7/29+6/26+4/29= 15/29+6/26=15/29+3/13=195/377+87/377=282/377