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pitad21porcadillashy
@pitad21porcadillashy
October 2022
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solve 2x-y=5 and 5x-y=11 elimination by substitution
Answers & Comments
BlueTech
Answer:
2x−y=5;5x−y=11
Step-by-step explanation:
// Solve equation [2] for the variable y
[2] y = 5x - 11
// Plug this in for variable y in equation [1]
[1] 2x - (5x-11) = 5
[1] -3x = -6
// Solve equation [1] for the variable x
[1] 3x = 6
[1] x = 2
// By now we know this much :
x = 2
y = 5x-11
// Use the x value to solve for y
y = 5(2)-11 = -1
Solution :
{x,y} = {2,-1}
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Answers & Comments
Answer:
2x−y=5;5x−y=11
Step-by-step explanation:
// Solve equation [2] for the variable y
[2] y = 5x - 11
// Plug this in for variable y in equation [1]
[1] 2x - (5x-11) = 5
[1] -3x = -6
// Solve equation [1] for the variable x
[1] 3x = 6
[1] x = 2
// By now we know this much :
x = 2
y = 5x-11
// Use the x value to solve for y
y = 5(2)-11 = -1
Solution :
{x,y} = {2,-1}