Question

Ayudenmen con estos ejercicios porfaaaaaaaaaaaa

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Answer 1

Respuesta:

holu

Explicación paso a paso:

1) 2x + 5y = 16     x = 16 - 5y /2

    x + 3y = 6     x = 6 - 3y

16 - 5y /2 = 6 - 3y

16 - 5y = 12 - 6y

16 - 12 = 5y - 6y

4 = -y     y = -4

x = 6 - 3y     x = 6 - 3.-4 = 6 + 12 = 18

2) x = 6 - 4y /3      

10x + y = 3/2     x = 3/2 - y /10 = 3 -2y /2  /10 = 3 -2y /20

6 - 4y /3 = 3 -2y /20

120 - 80y = 9 -6y

111 = 74y

y = 111/74

x = 6 - 4y /3     x = 6 - 4.111/74 /3

x = 444 - 444/74.3 = 0

3) x = 4 + 5y /2

y = 8 - 4x     x = 8 - y /4

4 + 5y /2 = 8 - y /4

8 + 10y = 8 - y

y = 0

x = 4 + 5y /2     x = 4 + 0 /2 = 2

4) 3x + 9y = 4     x = 4 - 9y /3

2x - y = 2     x = 2 + y /2

4 - 9y /3 = 2 + y /2

8 - 18y = 6 + 3y

2 = 21y

y = 2/21

x = 2 + y /2     x = 2 + 2/21 /2

x = 44/42 = 22/21

5) -4x + 3 = -y     x = 3 + y /4

x - 8y = 38     x = 38 + 8y

3 + y /4 = 38 + 8y

3 + y = 152 + 32y

31y = -149

y = -149/31

x = 38 + 8y     x = 38 + 8.-149/31

x = 1178 - 1192 /31

x = -14/31

✨ Samael16² ✨

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