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juin [17]
4 years ago
12

Consider the system of equations {3x+4y=2 {2x-4y=8Which is its solution?​

Mathematics
2 answers:
vesna_86 [32]4 years ago
5 0

Answer:

Answer:

(

2

,

−

1

)

Explanation:

The quickest way is to use elimination

3

x

+

4

y

=

2

                 

+

2

x

−

4

y

=

8

−

−

−

−

−

5

x

     

=

10

⇒

   

x

=

2

Now substitute into one of the original eqns.

3

×

2

+

4

y

=

2

6

+

4

y

=

2

4

y

=

−

4

⇒

y

=

−

1

check in other eqn.

2

x

−

4

y

=

8

2

×

2

−

(

4

×

−

1

)

=

4

−

−

4

=

4

+

4

=

8

√

solns  

(

2

,

−

1

)

Step-by-step explanation:

amid [387]4 years ago
5 0
This is the solution to your promblem
(
2
,
−
1
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Step-by-step explanation:

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