Question

please solve 2 and 3 only

Answer 1

Let the number be x

2/3x = x-20
20 = x-2/3x
20 = 1/3x
X = 60

So here is your answer
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Answer 2

1)let the no. be x
2/3x=x-20
2x=3x-60
2x-3x=60
-x=-60
=60ans

2)let the no.be x
4/5x=10+2/3x
4/5x=30+2x/3
3(4x)=5(30+2x)
12x=150+10x
12x-10x=150
2x=150
x=150/2=75ans