MatemáticasBásico1 respuestas

Método de igualación7x + 8y = 295x + 11y = 26?

Método de igualación 7x + 8y = 29 5x + 11y = 26.

En resumen

7x + 8y = 29 y = (29 - 7x)÷8 5x + 11y = 26 y = (26 - 5x)÷11 (29 - 7x)÷8 = (26 - 5x)÷11 (29 - 7x)÷8×11 = 26 - 5x (29 - 7x)÷88 = 26 - 5x 29 - 7x = (26 - 5x)×88 29 - 7x = 2288 - 440x - 7x + 440x = 2288 - 29 433x = 2259 x = 2259÷433 x = 5. 21.

Mejor respuesta

Nikle015
7

7x + 8y = 29

y = (29 - 7x)÷8

5x + 11y = 26

y = (26 - 5x)÷11 (29 - 7x)÷8 = (26 - 5x)÷11 (29 - 7x)÷8×11 = 26 - 5x (29 - 7x)÷88 = 26 - 5x 29 - 7x = (26 - 5x)×88

29 - 7x = 2288 - 440x - 7x + 440x = 2288 - 29

433x = 2259

x = 2259÷433

x = 5.

21.