4x + x - 3-9 + 4x = 6 ??​

Step-by-step explanation:

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Given:

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Combine like terms.

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Add 12 to both sides.

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Divide both sides by 9.

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Hope this is helpful.

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

a is the right answer