115k views
3 votes
Solve the following system of equations.

9x + 4y = 4

-5x + 7y = 7

User Muuk
by
5.8k points

2 Answers

3 votes

Answer:

this is the answer with steps

hope it helps!

Solve the following system of equations. 9x + 4y = 4 -5x + 7y = 7-example-1
Solve the following system of equations. 9x + 4y = 4 -5x + 7y = 7-example-2
Solve the following system of equations. 9x + 4y = 4 -5x + 7y = 7-example-3
User Wingr
by
6.8k points
4 votes

Answer:

The solution is:


(0, 1)

Explanation:

We have the following equations


9x + 4y = 4


-5x + 7y = 7

To solve the system multiply by
(9)/(5) the second equation and add it to the first equation


-5*(9)/(5)x + 7(9)/(5)y = 7(9)/(5)


-9x + (63)/(5)y = (63)/(5)


9x + 4y = 4

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


(83)/(5)y=(83)/(5)


y=1

Now substitute the value of y in any of the two equations and solve for x


9x + 4(1) = 4


9x +4 = 4


9x = 4-4


9x = 0


x=0

The solution is:


(0, 1)

User MattSom
by
6.0k points
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