prove that 1=2
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1) a = b 1) Given
2) a2 = ab 2) Multiply both sides by a
3) a2-b2 = ab-b2 3) Subtract b2 from both sides
4) (a+b)(a-b) = b(a-b) 4) Factor both sides
5) (a+b) = b 5) Divide both sides by (a-b)
6) a+a = a 6) Substitute a for b
7) 2a = a 7) Addition
8) 2 = 1 8) Divide both sides by a
2) a2 = ab 2) Multiply both sides by a
3) a2-b2 = ab-b2 3) Subtract b2 from both sides
4) (a+b)(a-b) = b(a-b) 4) Factor both sides
5) (a+b) = b 5) Divide both sides by (a-b)
6) a+a = a 6) Substitute a for b
7) 2a = a 7) Addition
8) 2 = 1 8) Divide both sides by a
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