solve equation -15x-10y+15 and 10×+30y-5
Answers
Answered by
0
15x+10y = -15 (1)
10x +30y = 5 (2)
multiplying equation (1) by 3 ,
we get
45x +30y = -45 (3)
equation (3) - (2) we get,
45x + 30y =-45
- 10x + 30y = 5
---------------------------
35x = -50
x = -50/35
x = -10/7
now, putting values of x in equation (2) we get,
(10) × (10/7) +30y = 5
-100/7 + 30y = 5
30y = 100/7 + 5
30y = 135/7
y = 135/ (7) × (3)
y= 135/210
y = 27/42
Similar questions