4. If x=2/3, y=4/5, z=3/4 show that x + (y + 2) + (x + y) + (x + z).
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Answer:
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33.08
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Step-by-step explanation:
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(a) x +(y+2) +(x+y) +(x+z)
=> 2/3 +(4/5+2) +(2/3+4/5) +(2/3+3/4) [ putting x=2/3,y=4/5,z=3/4)
=> 2/3 +(8+10/2) +(10+12) +(8+9/12)
=> 2/3 +9+22+17/12
=> 2/3+17/12 +9+22
=> 8+17/12 + 31
=> 25/12 +31 => 25+372/12 => 397/12 => 33.08
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