Step 1

The product of -6 and the sum of a number and 15 can be translated as,

\(\displaystyle-{6}\times{\left({x}+{15}\right)}=-{6}{\left({x}+{15}\right)}\)

Therefore, the algebraic expression for given phrase is \(\displaystyle-{6}{\left({x}+{15}\right)}\)

The product of -6 and the sum of a number and 15 can be translated as,

\(\displaystyle-{6}\times{\left({x}+{15}\right)}=-{6}{\left({x}+{15}\right)}\)

Therefore, the algebraic expression for given phrase is \(\displaystyle-{6}{\left({x}+{15}\right)}\)