2ac+1ab+3bc

To write 2ac as a fraction with a common denominator, multiply by bb.

2ac⋅bb+1ab+3bc

To write 1ab as a fraction with a common denominator, multiply by cc.

2ac⋅bb+1ab⋅cc+3bc

Multiply 2ac and bb.

2bacb+1ab⋅cc+3bc

Multiply 1ab and cc.

2bacb+cabc+3bc

Reorder the factors of acb.

2babc+cabc+3bc

2babc+cabc+3bc

Combine the numerators over the common denominator.

2b+cabc+3bc

To write 3bc as a fraction with a common denominator, multiply by aa.

2b+cabc+3bc⋅aa

Multiply 3bc and aa.

2b+cabc+3abca

Reorder the factors of bca.

2b+cabc+3aabc

2b+cabc+3aabc

Combine the numerators over the common denominator.

2b+c+3aabc

Add 2/(ac)+1/(ab)+3/(bc)