5. Упростите выражение: 1) 5/8x−(1/4x−1/12y)+1/3y; 2) 9,4y+(2x−11 1/4y)−3 5/9x; 3) 2 1/6y−(7x−1 3/4y)+2 1/5x; 4) 3,5x+(6 1/4y−7x)−7y.

1. \(\frac58x-\frac14x+\frac1{12}y+\frac13y=\frac38x+\frac5{12}y\).
2. \(9.4y+2x-11\frac14y-3\frac59x=-\frac{32}{9}x-\frac{37}{20}y\).
3. \(2\frac16y-7x+1\frac34y+2\frac15x=-\frac{24}{5}x+\frac{47}{12}y\).
4. \(3.5x+6\frac14y-7x-7y=-\frac72x-\frac34y\).

Ответ: 1) \(\frac38x+\frac5{12}y\); 2) \(-\frac{32}{9}x-\frac{37}{20}y\); 3) \(-\frac{24}{5}x+\frac{47}{12}y\); 4) \(-\frac72x-\frac34y\).