Question

2x-7supra9 -x-5supra6 = x-9supra8

Answer 1

$\frac{2x-7}{9}$ - $\frac{x-5}{6} = \frac{x-9}{8}$
aducem la acelasi numitor comun, acesta fiind 72
8(2x-7) - 12(x-5) = 9(x-9)
16x-56 - 12x + 60 = 9x - 81
4 + 81 = 9x-16x+12x
85 = -7x+12x
85 = 5x
x = 85:5
x = 17