Solve the linear equations & check by substituting the x and y values thus obtained both equations. 1. 3x-y=8 2x-y=-2 2. 6x+y=3 7x-2y=13?

(1) : 3x - y = 8 → y = 3x - 8

(2) : 2x - y = - 2 → you substitute y by (3x - 8)

(2) : 2x - (3x - 8) = - 2

(2) : 2x - 3x + 8 = - 2

(2) : - x = - 10

(2) : x = 10

Recall (1): y = 3x - 8 → y = 30 - 8 → y = 22



(1) : 6x + y = 3 → y = - 6x + 3

(2) : 7x - 2y = 13 → you substitute y by (- 6x + 3)

(2) : 7x - 2(- 6x + 3) = 13

(2) : 7x + 12x - 6 = 13

(2) : 19x = 19

(2) : x = 1

Recall (1): y = - 6x + 3 → y = - 6 + 3 → y = - 3