SOLUTION: In a certain clothing store, 3 shirts and 5 ties costs $60 and 2 shirts and 3 ties costs $39 x = shirts y = ties 3x + 5y = 60 2x + 3y = 39 using the 5 steps and also using

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: In a certain clothing store, 3 shirts and 5 ties costs $60 and 2 shirts and 3 ties costs $39 x = shirts y = ties 3x + 5y = 60 2x + 3y = 39 using the 5 steps and also using       Log On


   



Question 1089295: In a certain clothing store, 3 shirts and 5 ties costs $60 and 2 shirts and 3 ties costs $39
x = shirts y = ties
3x + 5y = 60
2x + 3y = 39
using the 5 steps and also using substitution and addition I did this
3x + 5y = 60
3(3x + 5y)= 60
9x + 15y = 60
Now I have to ADD THIS EQUATION INTO THE SECOND EQUATION and this is were I am stuck and also it doesn't look right what am I doing wrong?

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
3 shirts and 5 ties costs $60
and 2 shirts and 3 ties costs $39
x+=+shirts
+y+=+ties
3x+%2B+5y+=+60....eq.1
2x+%2B+3y+=+39 ....eq.2
solve this system:
start with 3x+%2B+5y+=+60....eq.1 and solve for x
3x+%2B+5y+=+60
3x+=+60-5y
x+=+60%2F3-5y%2F3
x+=+20-5y%2F3-> substitute it in eq.2
2%2820-5y%2F3%29%2B+3y+=+39 ....eq.2
40-10y%2F3%2B+3y+=+39
3%2A40-%2810y%293%2F3%2B+3%2A3y+=+3%2A39
120-10y%2B+9y+=+117
120-y+=+117
120-117+=+y
y=3
now find x
x+=+20-%285%2A3%29%2F3
x+=+20-5
x+=+15

shirt cost $15
tie cost $ +3