Question

Solve the system of equations.

5x+4=9
3x+2y=4

Answer 1

are you solving for both x?

Answer 2

HI!!

Answer 3

is this a trick question?

Answer 4

no

Answer 5

it is really \[5x+4=9\\
3x+2y=4\] or is it
\[5+4y=9\\
3x+2y=4\]?

Answer 6

5x + 4 = 9
3x + 2y = 4

Are you missing 'y' in the first equation? @Legends

Is there supposed to be a 'y' after '4'?

Answer 7

Sorry guys yea its 5x+y=9

Answer 8

@iGreen. Yea its
5x + 4 = 9
3x + 2y = 4

Answer 9

Oh, okay..

5x + y = 9
3x + 2y = 4

This is it?

Answer 10

yea

Answer 11

We can start by subtract 5x to both sides in the first equation:

y = -5x + 9

Now we can substitute '-5x + 9' for 'y' in the 2nd equation:

3x + 2y = 4

3x + 2(-5x + 9) = 4

Distribute 2 into the parenthesis:

3x + -10x + 18 = 4

Combine:

-7x + 18 = 4

Subtract 18 to both sides, what's 4 - 18?

Answer 12

-14

Answer 13

Yes, so we have:

-7x = -14

Divide -7 to both sides, what's -14 / -7?

Answer 14

2

Answer 15

So is the answer(2,-1)

Answer 16

@iGreen.

Answer 17

Hold on.

Answer 18

The x-value is 2..

Answer 19

Yep, you got it.

Answer 20

thanks

Answer 21

We plug 2 back into any of the two equations for 'x' and we get -1 for y..