Question

de igualación: (3x + 2y = 23) ecuación 1 y (5x + y = 29) ecuación 2.

Answer 1

Respuesta:

x = +5

y = +4

Explicación paso a paso:

(3x + 2y = 23)

(5x + y = 29)

3x = +23-2y

x = +23-2y/+3

5x = +29-y

x = +29-y/+5

+23-2y/+3 = +29-y/+5

+5(+23-2y) = +3(+29-y)

+115-10y = +87-3y

-10y+3y = +87-115

-7y = -28

-7y/-7 = -37/-7

y = +4

3x + 2y = 23

3x+2(+4) = +23

3x+8 = +23

3x = +23-8

3x = +15

x = +15/+3

x = +5