Question

2y - 5x = -2 3y + 2x = 35

Answer 1

Answer:

x=4,y=9

Step-by-step explanation:

We want to solve the equation:

$2y - 5x = - 2$

$3y + 2x = 35$

simultaneously.

Multiply the top equation by 3 and the bottom equation by 2 to get:

6y-15x=-6

6y+4x=70

Subtract the top equation from the bottom equation.

$4x - - 15x = 70 - - 6$

$19x = 76$

$x = \frac{76}{19}$

$x = 4$

We substitute x=4 into 2y-5x=-2 to get:

$2y - 5(4) = - 2$

$2y = - 2 + 20 = 18$

$y = \frac{18}{2} = 9$

Therefore the solution to the system is

(4,9)