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Answer:
1) (2x+3)+ (3x-1)=102
removing bracket
2x+3+3x-1 = 102
5x +2=102
5x = 102-2
5x = 100
x = 100÷5
x = 20
3) 5x = 4 (x+10)
5x = 4x + 40
5x - 4x = 40
x = 40
5) Arjun's age = 2x
shroya's age = x
present age ( five ago)
Arjun's age = 2x - 5
shriya's age = x - 5