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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 … 
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Solve systems by substitution 5x  2y = 5 y  5x = 3 Substitute 5x + 3 for y in the first equation, and solve it for x. Once you have x, use either of the two equations you wrote to solve for y. 
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solve each system of equations by substitution. y=3x9 please help explain how to solve this using substitution. 
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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 … 
Math Homework
Hello! I need help with these math questions, thanks! :) 1.) Solve the system by substitution. 5x + 2y = 17 x = 3y 2.) Solve the system by substitution. x/3 + y = 4/3 x + 2y = 11 3.) Solve the system by elimination. 2x  3y = 0 2x … 
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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. 
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Solve the integral of (x*e^2x)/(1+2x)^2 by first using u substitution and then use integration by parts. I am very confused on how to do usubstitution with this because no mattter what I let u be equal to the du never comes out to … 
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?