Someone pls explain how to do this step by step

7

Step-by-step explanation:

12=5+4p+3p ---> subtract the 5 to the other side

12-5=4p+3p ---> combine like terms

7=p

Hope this helps! :)

if you use photomath right away it will give you the answer not like this app that you have to wait for people.

$450

step-by-step explanation:

first, you have to multiply 150x2=300

next, you have to add 150+300= 450