verify that (a+b)+c=a+(b+c) where a=-2/3, b=-3/4, c=7/5
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Answer:
LHS=RHS
Step-by-step explanation:
(a+b)+c=a+(b+c)
=>(2/3+3/4)+7/5=2/3+(3/4+7/5)
=>(8+9)+7 = 2+(15+28)
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(12)+5 3+(20)
=>17/12+7/5=2/3+43/20
=>85+84 = 40+129
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60 60
=>169/60=169/60
LHS=RHS
PROVED
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