Algebra 1
posted by Debbie .
Solve by substitution
2x+3y=40.50
3x+y=38.00

Algebra 1 
Anonymous
Use the process of elimation and elimate the x varible. This gives you the y variable. Then you substitue this answer for the x varible. If you need any help with the process of elimantion, I could asist you more.

Algebra 1 
Steve
However, using substitution,
pick either equation and solve for a variable:
3x+y = 38.0
so,
y = 383x
Now substitute that value into the other equation:
2x+3y=40.50
2x + 3(383x) = 40.5
2x + 114  9x = 40.5
7x = 73.5
x = 10.5
y = 383x = 6.5
Respond to this Question
Similar Questions

Substitution MethodPlz help
Use the Substitution method to solve the system of equations. x + y = 4 x  y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=4 (y+2) + y = 4 solve for y. Then, x= y+2 i don't get it.How … 
algebra 1
Solve the Foll by substitution x=1/5y 3x+2y=26 So, substitute 1/5y for x in the second equation. Then solve for y. Can you take it from here? 
Algebra
Can someone please help solve this? Solve by using addition or substitution or addition. 10x+2y=7 y=5x+3 the answer my got was x=11/10 y=2 My teacher said that was wrong. Never mind this post I found out how to solve it. Try substitution. 
math
solve each system of equations by substitution. y=3x9 please help explain how to solve this using substitution. 
substitution method
Solve by substitution method please help me solve this. I do not know how to do this at all. The question is 3x+8y=33 and x=316y I know that I have to plug x into the first x like 3(316y)+ 8y = 33 but i do not know what to do from … 
algebra
i need help with these problems (either a solution or how to plug them into a graphing calculator): 1) Solve by substitution or elimination 4/x + 1/y + 2/z = 4 2/x + 3/y  1/z = 1 1/x + 1/y + 1/z = 4 2)Solve the system of equations … 
Algebra 1
bobpursey, In this problem you helped me with earlier: Solve using any appropriate method. y = 2×  5, y = ½× + 1 Substitution, substitute for y. 2×5=½ × + 1 3/2 x=6 x=4 y= 2*45=3 How did you choose which method you were going … 
Math
17) solve this linear system using the method of substitution. 2yx=10 y= 3/2x1 20) simplify then solve by substitution 2(x4)+y=6 3x2(y3)=13 just need help with these 2. 
Algebra
I need help learning to solve substitution. I have a problem that says solve the system by substitution 4.5x2y=12.5 3.25xy=0.75 
Algebra PLEASE HELP!!
What advantages does the method of substitution have over graphing for solving systems of equations?