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What is x in x -3x plus 7 equals 28?

Anonymous

∙ 7y ago

Updated: 9/26/2023

x - 3x + 7 = 28

Collect the x together: x - 3x = (1-3)x = -2x

→ -2x + 7 = 28

Collect the numbers together - subtract 7 from both sides

→-2x = -21

Divide both sides by -2 to get what one x is:

x = -10.5

Wiki User

∙ 7y ago

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What mistake was made in this equation 3x plus 7 equals -4x plus 28 -x plus 7 equals 28 -x equals 21 x equals -21?

3x + 7 = -4x + 28 implies 7x + 7 = 28

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