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4x × 4x = (4x)² = 16x²
If y = 4x and 4x = 24, then y = 24 (by the transitive property of equality of the real numbers, that state:For every real numbers a, b, and c, if a= b and b =c, then a = c)
4x = 10 Original EquationDivide each side by 4x = 10/4SimplifyX = 5/2
4x - 2x = 2x
x equals 221