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2/3 + 1/3 = 3/3 = 1
that means th painted the whole wall togetherly. 
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  • Brainly User
Fraction of the wall shubham painted= 2/3
Fraction of the wall madhavi painted = 1/3
Total wall space they painted together = 2/3+1/3=3/3=1
Subham and his sister painted the whole wall together.