+0  
 
0
96
1
avatar

I need help with college math

 

 Apr 25, 2020
 #1
avatar+27001 
+1

3e + 4b = 485

5e + 3b = 460         Multiply this equation by - 1 1/3 to get

-20/3 e   - 4b  = - 613 1/3    add this equation to the top one    (see how we eliminated the 'b' variable?)

-11/3 e = -128 1/3

e    =   128 1/3   x 3/11 = 35 cents

 

SUb this value into one of the equtions to find the value of b

3(35) + 4b = 485

b = 95 cents

 Apr 25, 2020

42 Online Users

avatar