X + 6 = 27 , 7x - 3 = 9 metodo de igualacion porfa me urgeee?

Question

X + 6 = 27 , 7x - 3 = 9 metodo de igualacion porfa me urgeee.

Jea5notam6shara · Accepted Answer

Espero y te sirva. X + 6 = 27 X = 27 - 6 X = 21 7X - 3 = 9 7X = 9 + 3 7X = 11 X = 11 / 7 X = 1. 571.

Piciosa1 · Answer

X + 6y = 27 (A)

7x - 3y = 9 (B)

Despejar "x" de (A) y (B) :

x = 27 - 6y (C)

x = (3y + 9) / 7 (D)

27 - 6y = (3y + 9) / 7

189 - 42y = 3y + 9

180 = 45 y

y = 4

x + 6(4) = 27

x + 24 = 27

x = 3

Solución :

x = 3

y = 4

(3, 4)

Comprobación :

x + 6y = 27

3 + 6(4) = 27

3 + 24 = 27 = > 27 = 27

7x - 3y = 9

7(3) - 3(4) = 9

21 - 12 = 9 = > 9 = 9.

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