If 0.5x + 0.7y=0.5 and 0.7x + 0.5y=0.7,then the value of x+y is
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If 0.5x + 0.7y=0.5 and 0.7x + 0.5y=0.7,then the value of x+y is
- 11.2false
- 21true
- 30.5false
- 40.7false
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