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dimaraw [331]
3 years ago
5

Solve the system of equations. 12x - 5y = –20 y=x+4 2 = Y=

Mathematics
2 answers:
VARVARA [1.3K]3 years ago
4 0

Answer:

Solution :

{x,y} = {0/14261512,4}

Step-by-step explanation:

Solve by Substitution :

// Solve equation [2] for the variable y

[2] y = x + 4

// Plug this in for variable y in equation [1]

[1] 12x - 5•(x +4) = -20

[1] 7x = 0

// Solve equation [1] for the variable x

[1] 7x = 0

[1] x = 0

// By now we know this much :

x = 0

y = x+4

// Use the x value to solve for y

y = (-0/14261512)+4 = 4

Natali5045456 [20]3 years ago
4 0
<h3>Answer:y = (-0/14261512)+4 = 4 </h3>

<h3>Step-by-step explanation:[2]    y = x + 4</h3><h3 /><h3>// Plug this in for variable  y  in equation [1]</h3>

<h3>   [1]    12x - 5•(x +4) = -20</h3><h3>   [1]    7x = 0</h3><h3>// Solve equation [1] for the variable  x </h3><h3 />

<h3>   [1]    7x = 0 </h3>

<h3>   [1]    x = 0 </h3><h3>// By now we know this much :</h3>

<h3>    x = 0</h3><h3>    y = x+4</h3><h3>// Use the  x  value to solve for  y </h3>

<h3>    y = (-0/14261512)+4 = 4 </h3><h3>Solution :</h3><h3> {x,y} = {0/14261512,4} </h3>
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