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Simplifying 7x4 = 21x3 Solving 7x4 = 21x3 Solving for variable 'x'. Reorder the terms: -21x3 + 7x4 = 21x3 + -21x3 Combine like terms: 21x3 + -21x3 = 0 -21x3 + 7x4 = 0 Factor out the Greatest Common Factor (GCF), '7x3'. 7x3(-3 + x) = 0 Ignore the factor 7.Subproblem 1
Set the factor 'x3' equal to zero and attempt to solve: Simplifying x3 = 0 Solving x3 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x3 = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.Subproblem 2
Set the factor '(-3 + x)' equal to zero and attempt to solve: Simplifying -3 + x = 0 Solving -3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + x = 0 + 3 x = 0 + 3 Combine like terms: 0 + 3 = 3 x = 3 Simplifying x = 3Solution
x = {3}
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