Найдите корень уравнения: г) 12 1/6 – b = 4 8/15 ; д) 5 25/36 – t = 1 1/12 + 2 3/8

г) 12 1/6 – b = 4 8/15
12 1/6 – 4 8/15=b
73/6-68/15 = b
(73*5 -68*2)/30 = b
(365- 136)/30 =b
229/30 = b
b = 229/30 = 7 29/30

д) 5 25/36 – t = 1 1/12 + 2 3/8
5 25/36 – 1 1/12 – 2 3/8 =t
205/36-13/12-19/8= t
(205*2 -13*6- 19*9) /72 = t
(510-78-171)/ 72 = t
t = 261/72 = 3 45/72