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06-12-2019
Mathematics

contestada

The equations he came up with are:
12x+6y= 120
4x + y = 30

The equations he came up with are 12x6y 120 4x y 30 class=

Respuesta :

Yang100 Yang100

06-12-2019

Answer:

x=5, y=10. (5, 10).

Step-by-step explanation:

12x+6y=120

4x+y=30

--------------------

2x+y=20

4x+y=30

-------------

y=20-2x

4x+(20-2x)=30

4x+20-2x=30

2x=30-20

2x=10

x=10/2

x=5

4(5)+y=30

20+y=30

y=30-20

y=10

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