3х-5 + 2х+1 = 2х-3 7 14 2

Question

3х-5 + 2х+1 = 2х-3

7 14 2

Answer 1

3х-5 + 2х+1 = 2х-3

   7        14       2

3х-5 + 2х+1 - 2х-3  = 0 

   7        14       2

2(3х-5)+2х+1 - 7(2х-3)  = 0 

            14

6х - 10 + 2х + 1 - 14х + 21 = 0 -6х + 12 = 0 6х = 12 х = 2 Ответ. х = 2.

Answer 2

(3x-5)/7+(2x+1)/14=(2x-3)/2

(2(3x-5)+(2x+1)-7(2x-3))/14=0

2(3x-5)+(2x+1)-7(2x-3)=0

6x-10+2x+1-14x+21=0

-6x+12=0

6x=12

x=2