Question

Solve this system of linear equations. Separate

Answer 1

Answer:

(9,4)

Step-by-step explanation:

The given system is:

9x + 3y = 93

3x - 4y = 11

Multiply the bottom equation by 3 to get:

9x + 3y = 93

9x - 12y = 33

Subtract bottom equation from top one to get:

3y--12y=93-33

$15y = 60$

$y = \frac{60}{15}$

$y = 4$

We put y-value into the bottom equation:

$3x - 4 \times4= 11$

$3x - 16= 11$

$3x = 11 + 15$

$3x = 27$

$x = \frac{27}{3}$

$x = 9$