algebra
posted by Terri .
On the problem 9x+7y=4
x=234y
solve by substitution
Do you mean to put 9 in the place of x=234y (9x=234y)

It would look like this...9(234y)+7y=4
Then you simplify
9*23=207
9*4y=36y
so you now have
20736y+4y
Combine like terms
36y+4y=32
32y=4
Finally you divide
the end reslut is y=8
Respond to this Question
Similar Questions

algebra
solve by substitution 5x2y = 5 y  5x = 3 could someone take a min a show me how to do this problem by steps so i can do the rest of my problems and wait a min so i may ask questions. I m failing my algebra class and desparately … 
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 … 
Algebra1!Plz help I have test 2morrow!!!
so would the new eqaution be... 2x+8=10 then.. 2x=2 x=1? 
Algebra
Can someone show me step by step how to do this problem to have an example to go by so I will be able to do my other problems. Thanks Solve by substitution 4x12y=5 x+3y=1 I know that you have solve one of the equations. I have picked … 
Algebra Question
I did a problem and used the substitution method and it took me forever to solve by hand. Is there a shorter way to show how this problem was done. The problem was x+y+z=7,xy+2z=7,2x+y+3z=15 The final answer came out to be x=4 z=2 … 
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
The problem is 9x+4y=12 x=265y Solve by substitution method 
algebra
Here is my question. How do you solve th substitution method in this problem? 
Math
Ok so you're supposed to solve the system by method of substitution. And the problem is: 2/3x + y = 2 2x  3y = 6 So i put y= 2/3x into the second equation which looks like: 2x  3(2/3x + 2) = 6 and then 2x2x6=6 So like everything … 
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 …