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## Answers

Multiply both sides by a ax

**a**=

**a**xb

a²=ab

Subtract both sides by b² a²-

**b²**=ab-

**b²**

Factor (a+b)(a-b)=b(a-b)

Divide both side by a-b (a+b)(a-b)/

**a-b**=b(a-b)/

**a-b**

a+b=b

Since a=b ; then, b+b=b

2b=b

Divide both sides by b 2b/b=b/b

**2=1**