Question

8)
4n + 2 = 6
2n +2m = 4
b)
Зm +3n
+ 3 = -2
2m = n + 5​

Answer 1

Resposta:

Explicação passo-a-passo:

A)

4n + 2m = 6

2n +2m = 4 (-1)

4n+2m = 6

-2n - 2m = -4(+)

------------------------

2n= 2

N= 2/2

N = 1

2n+2m= 4 (:2)

n+m = 2

1+m = 2

m = 2-1

m = 1

----------------

b)

Зm +3n + 3 = -2

3m+3n = -2-3

3m+3n = -5

2m = n + 5​

2m - n= 5

3m+3n = -5

2m - n= 5 (3)

3m+3n = - 5

6m-3n = 15(+)

---------------------

9m = 10

m = 10/9

2m-n = 5

2.10/9 - n = 5

20/9 - 5 = n

(20-9.5)/9 = n

(20-45)/9 = n

-25/9= n

n = -25/9