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Anonymous
In 7x+7, x is a variable.
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7x + 7 = 7(x + 1)
7x+7=28x 28x-7x=7 21x=7 x=3
(7x + 7)(x + 2) = 7x2 + 21x + 14
The answer to the math problem -3 7x plus 7 is x equals 1/3.
7x+8-x-7 6x+1