1,27*1:1,27-x*1:x=1.56-x-4.68:3-x-a=28:2,8+x-b-10+b=3,52:2-x-4,68:3+x-a=1.56-x-4.68:3+x-a=2-x-5.1+x=2.43+x-b-2.43+b-x=Помогите) Значения а, b, x не дано(

All men used to have long hair. Children used to dress like adults. Men and women used to dance at formal balls. Women used to wear many petticoats under their skirts. Men used to carry walking sticks.

1,27 * 1 : 1,27 - x * 1 : x= 1,27 : 1,27 - х : х = 1 - 1 = 01.56 - x - 4.68 : 3 - x - a = 1,56 - 1,56 - х - х - а = 1 - 2х -а28 : 2,8 + x - b - 10 + b = 10 - 10 + х - b + b = x 3,52 : 2 - x - 4,68 : 3 + x - a = 1.76 - 1.56 - х + х - а = 0,2 - а1.56 - x - 4.68 : 3 + x - a =1,56 - 1,56 - х + х - а = -а2 - x - 5.1 + x = 2 - 5,1 -х + х = -3,12.43 + x - b - 2.43 + b - x = 2,43 - 2,43 + х - х - b + b = 0