Question

1) Rezolvati in R ecuatiile:

a) 2x-7 supra 9 - x-5 supra 6 = x-9 supra 8

b) 5x-3 supra 4 - 9x-1 supra 8 = 3 - 3+4x supra 2

2) Rezolvati in R:

a) x- x supra 2 + 2x+1 supra 3 - 3x+1 supra 4 - 4x+1 supra 6 = 0

b) x+ 3x-9 supra 5 = 4 - 5x-12 supra 3

AJUTORRRRRRRRRR VA ROG FRUMOSSSSSSSSS AM NEVOIE URGEEEEEENTTTTT!!!!!!!! DAU COROANA SI PUNCTE IN + !!!!!!!!

Answer 1

a) (2x-7)/9 - (x-5)/6 = (x-9)/8
16x-56-12x+60=9x-81
4x+4=9x-81
5x=85
x=17

b) (5x-3)/4 - (9x-1)/8 = 3 - (3+4x)/2
10x-6-9x+1=24-12-16x
x-5=12-16x
17x=17
x=1


2) Rezolvati in R:

a) x- x/2 + (2x+1) /3 - (3x+1)/4 - (4x+1)/6 = 0
12x-6x+8x+4-9x-3-8x-2=0
-3x-1=0
3x=-1
x=-1/3


b) x+ (3x-9)/5 = 4 - (5x-12)/3
15x+9x-27=60-25x+60
24x-27=120-25x
49x=147
x=3