Question

3m + n =52
2m - n =-1
-2a + b =8
3a + b =-2 método de igualación

Answer 1

Explicación paso a paso:

3m + n =52

2m - n = -1

n = - 3m + 52

2m + 1 = n

Igualando:

-3m + 52 = 2m + 1

52 - 1 = 2m + 3m

51 = 5m

m = 51/5

Reemplazando:

2m - n = - 1

2(51/5) = n - 1

102/5 = n - 1

102/5 + 1 = n

n = 107/5

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

-2a + b = 8

3a + b = -2

b = 8 + 2a

b = - 2 - 3a

Igualando:

8+2a = -2-3a

10 = - 5a

a = - 2

Reemplazando:

b = 8 + 2a

b = 8 + 2(-2)

b = 9 - 4

b = 5