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krek1111 [17]
3 years ago
12

(x+4)(x+2)/4x+8 restrictions

Mathematics
1 answer:
Brums [2.3K]3 years ago
7 0
Solve the equation 4x + 8 = 0
4x = -8
x = -2

so doesn't exsist at x= -2
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If x + 3y = 7 and x - 3y =7 , then find y<br><br> Please help me
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Answer:

x + 3y = 7 , x - 3y = 7 : y = , x = 7

Step-by-step explanation:

\left[\begin{array}{ccc}x + 3y = 7\\x - 3y = 7\end{array}\right]

Isolate x for x + 3y = 7 : x = 7 - 3y:

Substitute x = 7 - 3y:

\begin{bmatrix}7-3y-3y=7\end{bmatrix}

Isolate y for 7 - 3y - 3y = 7 : y = 0:

For x =7-3y

Substitute y = 0

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The solution to the system of equations are:

y=0,\:x=7

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