693 решите уравнение (6/7* х + 3/7) : 5/7 -1/2 = 1/6 (5/8 *х - 1/2) : 3/4 -1/8 = 1/4

Question

693 решите уравнение (6/7* х + 3/7) : 5/7 -1/2 = 1/6
(5/8 *х - 1/2) : 3/4 -1/8 = 1/4

Answer 1

(6/7•x+3/7):5/7-1/2=1/6. (6/7•x+3/7):5/7=1/6+1/2. (6/7•x+3/7):5/7=2/3. 6/7•x+3/7=5/7•2/3. 6/7•x+3/7=10/21. 6/7•x=10/21-3/7. 6/7•x=1/21. X=1/21:6/7. X=1/18