math
posted by dee .
How do you solve this by elimination method? 4x+3y=016x+3=8y

4 x + 3 y = 0
16 x + 3 = 8y
______________
Multiply the first equation by 4
16 x + 12 y = 0
16 x + 3 = 8y
______________
Subtract 8 y by second equation
16 x + 12 y = 0
16 x + 3  8 y = 8y  8y = 0
______________
16 x + 12 y = 0
16 x + 3  8 y = 0
______________
Subtract 3 by second equation
16 x + 12 y = 0
16 x + 3  8 y  3 = 0  3
______________
16 x + 12 y = 0
16 x  8 y =  3
________________
Subtract fsecond equation from first equation
16 x  1 6 x + 12 y  (  8 y ) = 0  (  3 )
12 y + 8 y = 3
20 y = 3 Divide both sides by 20
y = 3 / 20
Put y = 3 / 20 in first equation.
4 x + 3 y = 0
4 x + 3 * 3 / 20 = 0
4 x + 9 / 20 = 0 Subtract 9 / 20 by both sides
4 x + 9 / 20  9 / 20 = 0  9 / 20
4 x =  9 / 20 Divide both sides by 4
x =  9 / ( 20 * 4 )
x =  9 / 80
Solution :
x =  9 / 80 , y = 3 / 20
Respond to this Question
Similar Questions

Math
Solve by eliminnation methods 2x4y=5 2x4y=6 solve the system by elimination method 5x+2y= 13 7x3y=17 Solve x+6<7 or x+6>4 Determine whether the given numbers are solutions of the inequality 8,10,18,3 y8>2y3 Solve … 
Math
How do I solve these problems, I really need help. Solve by substitution method 6x+5y=17 x=538y Solve by elimination method 2x+3y=5 4x+6y=10 
Algebra
Solving system of linear equations by using the apropiate method name the method and the x,y coordinates 1)X=4y+8 2x8y=3 2)3x7y=6 elimination method 2x+7y=4 (2,0) 3)5x2y=12 elimination method 3x2y=2 (7,23/2) 4)9x8y=42 elimination … 
math elimination method
elimination method really confuses me. solve by elimination method 5r 3s = 17 3r + 5s =17 A. solution is ______ (ordered pair, integer or fraction) B. Infinitely many C. No Solution 
Math Elimination method
Use the elimination method to solve x+8y= 47 x + 4y= 13 The solution is (___,___) Thank you 
Algebra
Solve by elimination method. 7r3s=14 3r+7s=64 Could never figure out the elimination method. Would love some help with this one. Thanks 
MaTh = Algebra = help
Solve this system of linear equaiton by an algebraic method. So If I had to solve this the elimination method way, how would I do it? 
Algebra/Elimination method
Solve using the elimination method. If the system has no solution or an infinite number of solutions, state this. 27x  18y = 180 9x + 6y = 60 
math
Please solve the system with the elimination method. Explain each step as it is performed. 5y = x 2x  3y = 7 Would the elimination method have been your first choice to solve this problem? 
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 …