Question

Помогите решить (распишите пожалуйста)

Answer 1

(5a - 2b) / (2a - b) = (2(2a - b) + a)/(2a - b) = 2(2a - b)/(2a - b) + a/(2a - b) = 2 + a/(2a - b)

a = 1.8 = 1 8/10 = 1 4/5 = 9/5

b = -1/3

2 + a/(2a - b) = 2 +  9/5 : (2*9/5 - (-1/3)) = 2 + 9/5 : (18/5 + 1/3) = 2 + 9/5 : (54 + 5)/15 = 2 + 9/5 * 15/59 = 2 + 27/59 = 2 27/59