How is solving 2x+c=d similar to solving 2x+1=9 for x? how are they different? how can you use 2x+c=d to solve 2x+1=9

Evaluate the given expression if m=45 |-3m|

Can someone me do math because i am having a breakdown rn because i don’t get it

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers