Question

-2x^2-6=7x хээээээээлп

Answer 1

2/7 : х = 2 6/7
2/7 : х = 20/7
х = 2/7: 20/7 = 2/7 * 7/20 = 2/20 = 1/10
х = 1/10
-----------------------------------------------------------
2/7 : 1/10 = 2/7 * 10/1 = 20/7 = 2  целых 6/7