Verified answer

Пошаговое объяснение:

№1

3,6а - 1. 1/2а + 2. 1/6а = (3,6 - 1. 1/2 + 2. 1/6) * а =

(3. 6/10 - 1. 1/2 + 2. 1/6) * а =

(3. 18/30 - 1. 15/30 + 2. 5/30) * а =

( (3-1+2) + (18-15+5)/30 ) * а =

(4 + 8/30) * а = 4. 8/30 * а = 4. 8/30а =

4. 4/15а

№2

-2/5х + 3. 1/3у + 1. 1/10х - 4у =

(-2/5х + 1. 1/10х) + (3. 1/3у - 4у) =

(-4/10х + 1. 1/10х) + (3. 1/3у - 3. 3/3у) =

(-4/10х + 11/10х) + (-2/3у) =

7/10х + (-2/3у) = 7/10х - 2/3у