Answer:
The equivalent expression is
![28p+14q+21r](https://img.qammunity.org/2020/formulas/mathematics/middle-school/d1lbt29ldkmq6chh7shlad8nc9iag99ixv.png)
Explanation:
The distributive property says for any numbers a, b c, and d
![d*(a+b+c)=a*d+b*d+c*d](https://img.qammunity.org/2020/formulas/mathematics/middle-school/n5wirs3uk65ec0g2oqivdtkuvb9yijqr2f.png)
which basically says you should multiply the coefficient
by every term in the parenthesis to get an equivalent expression.
Applying the distributive proper to the expression
we get:
![7(4p+2q+3r)=7*4p+7*2q+7*3r](https://img.qammunity.org/2020/formulas/mathematics/middle-school/j7oo6nnou43nu93irvjmeowvgxgappj3hp.png)
![=\boxed{28p+14q+21r}](https://img.qammunity.org/2020/formulas/mathematics/middle-school/mwq1q4ey35088gpryok91c0yz9vfupubxd.png)
which is an equivalent expression to
.