Question

Solve the system using substitution. Put in point form.
2x - 7y = 13
3x + y = 8

Answer 1

(3, -1)

Explanation:

3x +y = 8

-3x =-3x

Y=-3x +8 Substitute into 1st equation y=-3x+8

2x-7(8-3x+8)= 13 -3(3) + 8

2x-56+21x= 13 -9 +8

23x-56 =13 y = -1

+56= +56

23x = 69

23 23

x = 3

solution (3, -1)

Answer 2

are they being multiplied or added or subtracted?