Question

What is the x-value of the solution to this system of equations?
Y=2/7x-1
2x + 7y = -49

Answer 1

x = -21/2

Explanation:

y= 2/7 x-1

or, 7y= 2x -7

or, 2x -7y =7

2x + 7y = -49

4x = -42

x= -21/2

y= 2/7 × -21/2 -1

= -4