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guajiro [1.7K]
3 years ago
7

Solve the following system of equations. 9x + 4y = 4 -5x + 7y = 7

Mathematics
2 answers:
enyata [817]3 years ago
7 0

Answer:

this is the answer with steps

hope it helps!

ale4655 [162]3 years ago
5 0

Answer:

The solution is:

(0, 1)

Step-by-step explanation:

We have the following equations

9x + 4y = 4

-5x + 7y = 7

To solve the system multiply by \frac{9}{5} the second equation and add it to the first equation

-5*\frac{9}{5}x + 7\frac{9}{5}y = 7\frac{9}{5}

-9x + \frac{63}{5}y = \frac{63}{5}

9x + 4y = 4

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

\frac{83}{5}y=\frac{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)

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