- 15
- 18
- 21
- 25
- a
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Two sides=x+x=2x
Third side=x+5
2x+x+5=50
3x+5=50
3x=50-5
3x=45
x=45/3
x=15
Two sides=x+x=2x
Third side=x+5
2x+x+5=50
3x+5=50
3x=50-5
3x=45
x=45/3
x=15
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