Question

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

Answer 1

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