Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y).
8x - y = 31
5x + 3y = 23

Question

Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y).
8x - y = 31
    5x + 3y = 23

anonymous · Answer

use the first equation to get y in terms of x. in other words, get y by itself and then substitute it in the second equation.

anonymous · Answer

need help

anonymous · Answer

8x-y=31 ------> y = 8x-31
substitute that in the second equation and post what you get.

anonymous · Answer

A(4,1)

anonymous · Answer

8x-y=31 -- (*3)--> 24x-3y=93
                           (+) 5x +3y=23 (1)
                                29x=116 => x=4
(1)--x=4---> 5*4+3y=23 => 3y=23-20=> y=1

(4,1)