+0  
 
0
439
1
avatar

how do you use substitution for y=4 3x-y=1

 Mar 14, 2017
 #1
avatar+128079 
+5

y=4     3x-y=1        just sub for y in the second equation

 

3x - 4 = 1      add 4 to both sides

 

3x  = 5         divide both sides by 3

 

x =  5/3

 

 

cool cool cool

 Mar 14, 2017

1 Online Users

avatar