Best Answer

3X + 6 + X = 86

add the like terms, X's, together

4X + 6 = 86

subtract 6 from each side

4X = 80

divide both sides by 4

X = 20

check

3(20) +6 + (20) = 86

86 = 86

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Q: What does x equal in 3 x plus 6 plus x equals 86?

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