guiteaudashira guiteaudashira

23-02-2021
Mathematics

contestada

6x-8y=-38,5x+12y=99
what is I need some help

Respuesta :

Yang100 Yang100

23-02-2021

Answer:

x=3, y=7. (3, 7).

Step-by-step explanation:

6x-8y=-38

5x+12y=99

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

5(6x-8y)=5(-38)

-6(5x+12y)=-6(99)

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

30x-40y=-190

-30x-72y=-594

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

-112y=-784

112y=784

y=784/112

y=7

5x+12(7)=99

5x+84=99

5x=99-84

5x=15

x=15/5=3

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