Answered

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solve the system of equations y=5x-1 y=9x-9

Sagot :

Answer:

Look at the equations:

y

=

9

x

21

and

y

=

5

x

+

7

Because both equations equal (y), they both equal the same.

If an equations says "

y

=

9

x

21

" , that means we can replace (y) with

9

x

21

.

Therefore when i take the equation:

y

=

5

x

+

7

, we can replace (y) to get:

9

x

21

=

5

x

+

7

Now isolate (x):

9

x

21

=

5

x

+

7

21

=

14

x

+

7

28

=

14

x

x

=

2

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