An infinity of expressions equal 49.
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Let the number be x and so the expression is 4x -3
16c^2-49 -> (4x-7)(4x+7)
x = (r + st)/r is the expression that represents x in the equation rx - st = r.
11
The algebraic expression that represents the sum of 10 and 3 times a number x is 10 + 3x. This expression can be simplified by multiplying 3 with x to get 3x, and then adding 10 to it. In this expression, 3x represents three times the value of x, and 10 represents a constant value added to the product of 3 and x.