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3 years ago

7

Solve for x in the equation 3x + 8 = x - 12.

2 answers:

Yuliya22 [10]3 years ago

5 0

Answer:

x = -10

Step-by-step explanation:

Combine like terms and solve for x

3x + 8 = x - 12

3x= x - 20

2x = -20

x = -10

Drupady [299]3 years ago

3 0

Answer:

The answer is x = -10

Step-by-step explanation:

3 x -10 + 8= -22

-10 - 12 = -22

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Answer:

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Step-by-step explanation:

y = 7x + 20 -----> equation 1

4x - y = - 11

4x - ( 7x + 20 ) = - 11

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x = 9 / - 3

x = - 3

Substitute x = - 3 in equation 1,

y = 7 ( - 3 ) + 20

= - 21 + 20

y = - 1

Hence,

x = - 3

y = - 1

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