1-2n=-14+n can someone plz solve and explain this promblem

What is the value of the expression below? 148+(-6)| + |– 35= 7|

Nikolas calculated the volume of the prism. his work is shown below.

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.