Question

3(×+4)-5(2×+9)=-3(1-×)

resolver estas 2 ecuaciones linales

-5(2m-3)+4(m-7)-2(3m+1)=4(1-m)+5

Answer 1

3 (x + 4)- 5 (2x + 9) = - 3 (1 - x)

3x + 12 - 10x - 45 = - 3 + 3x

3x - 10x - 3x = - 3 + 45 - 12

-10x = 30

x = 30/-10

x = - 3

Respuesta : 

x = - 3

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- 5 (2m - 3) + 4 (m - 7) - 2 (3m + 1) = 4 (1 - m) + 5

-10m + 15 + 4m - 28 - 6m - 2 = -4m + 4 + 5 

-10m + 4m - 6m + 4m = 4 + 5 + 2 + 28 - 15

-8m = 24

m = 24/-8

m = - 3

Respuesta : 

m= - 3