решите уравнения z - 1 3/4 = 2 7/12

Question

решите уравнения

z - 1 3/4 = 2 7/12

Answer 1

Z=2 7/12+1 3/4
z=31/12+7/4
z=52/12
z=4 4/12
z=4 1/3

Answer 2

Z= 2 7/12 +  1 3/4 = 31/12 + 7/4= 31/12+21/12=52/12=4 4/12= 4 1/3
z=4 1/3