Question

Write your question here (Keep it simple and clear to get the best answer)2x+y=10
3x-2y=1
12m+12n=7
4m-3n=7

Answer 1

Answer:

x = 3, y = 4

m = -1/12, n = 2/3

Step-by-step explanation:

2x+y=10 - 1 multiply this by 2

3x-2y=1 - 2

by elimination method:

4x+2y=20

+ 3x-2y=1

7x = 21

x = 3

y = 3x-2y=1

y= 3×3-2y =1

-2y=-8

y= 4

12m+12n=7

4m-3n=7 (multiplying by 3)

12m+12n=7

12m-9n=21

21n=14

n=2/3

m = 12m+12n=7

= 12m+12×2/3=7

= 12m=-1

m=-1/12