Question

ME AJUDEM URGENTE PASSO A PASSO​

Answer 1

a) 3m - n = -6

7m + n = -14

10m = -20

m = -20/10

m = -2

3.(-2) - n = -6

-6 - n = -6

-n = -6 + 6

n = 0

b) 2m + n = -2

m + n = 1

-m - n = -1

m = -3

-3 + n = 1

n = 1 + 3

n = 4

c) -m + n = 1

2m + n = 7

m - n = -1

3m = 6

m = 6/3

m = 2

2.2 + n = 7

4 + n = 7

n = 7 - 4

n = 3

d) 5m - 3n = 8

m + 2n = -6

-5m - 10n = 30

-13n = 38

13n = -38

n = -38/13

m - 76/13 = -6

m = -6 + 76/13

m = (-78 + 76)/13

m = -2/13

e) 6m - 8n = -3

3m + 2n = 2

-6m - 4n = -4

-12n = -7

12n = 7

n = 7/12

3m + 14/12 = 2

3m + 7/6 = 2

3m = 2 - 7/6

3m = 5/6

18m = 5

m = 5/18