Solve the linear equation. (3x + 1) + 8 = 4(x + 9)

I need to know how to work this equation.
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2 Answers

3x+1+8 =4(x+9)

3x -4x +9 =36

-1x=36-9=27

x=-27
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Solve the set of linear equations by Guassian elimination method : a+2b+3c=5, 3a-b+2c=8, 4a-6b-4c=-2. Find a

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