Question

What is the solution to the system of equations?

3x+10y=-47
5x-7y=40

O (1,-5)
O (1,5)
O (-1,-5)
O (-1,5)

Answer 1

The solution of the system is x=1 and y= -5.

Explanation:

Given:

3x+10y=-47........(1)

5x-7y=40.............(2)

Solving equation (1) and (2) we get

15x + 50y=-235

15x-35y=200

85y = -435

y = -5.11

and, 3x + 10(-5.11) = -47

3x-50 = -47

3x=3

x=1