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• Identical expressions

• six *(seven - two *x) = zero
• 6 multiply by (7 minus 2 multiply by x) equally 0
• six multiply by (seven minus two multiply by x) equally zero
• 6(7 - 2x) = 0
• 67 - 2x = 0

• Similar expressions

• 6*(7 + 2*x) = 0