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Best Answer

1 + 4x + x = 21

Combine the like-terms on the left:

1 + 5x = 21

Subtract 1 from each side:

5x = 20

Divide each side by 5:

x = 4

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βˆ™ 14y ago
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Q: 1 plus 4x plus x equals 21 What is x?
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