2n-3+n/2=3

after multiplying both sides by 2, the equation will look

2n-3+n=6

add like terms

3n-3=6

add 3 to both sides

3n=9

divide both sides by 3

n=3

OK so u need to cross multiply the denominator of LHS with the numerator of RHS,like this

2n-3+n=2 x 3

Then do the following :-

2n – 3 +n=6

Then collect the like terms

2n +n=6+3

Then add the like terms

3n=9

Then divide by bringing 3 on RHS side

n=9/3

n=3

So ur answer is 3

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Remove the parenthesis now and multiply… 2n-3+n=6

Now change the -3, it will add now… 2n+n=6+3

Do the math… 3n=9

Now move the 3, it is multiplying so no it will divide… n=9/3

and done … n=3

lets check… (2(3)-3+(3))/2=3

(3n-3)/2=3

Multiply both sides by 2

3n-3=6

Add 3 to both sides

3n=9

Divide both sides by 3

n=3