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4x + 5y = 5 4x + 10y = 7 reduccion?

4x + 5y = 5 4x + 10y = 7 reduccion.

En resumen

4x + 5y = 5 - (4x + 10y = 7) 0x - 5y = - 2 - 5y = - 2 y = 2 / 5 4x + 5(2 / 5) = 5 4x + 2 = 5 4x = 3 x = 3 / 4 4x + 10y = 7 4(3 / 4) + 10(2 / 5) = 7 3 + 4 = 7 7 = 7 4(3 / 4) + 5(2 / 5) = 5 3 + 2 = 5 5 = 5 x = 3 / 4 y = 2 / 5.

Mejor respuesta

Wilkaralejandro
0

4x + 5y = 5 - (4x + 10y = 7)

0x - 5y = - 2 - 5y = - 2

y = 2 / 5

4x + 5(2 / 5) = 5

4x + 2 = 5

4x = 3

x = 3 / 4

4x + 10y = 7

4(3 / 4) + 10(2 / 5) = 7

3 + 4 = 7

7 = 7

4(3 / 4) + 5(2 / 5) = 5

3 + 2 = 5

5 = 5

x = 3 / 4

y = 2 / 5.