How to express my answer an an equation

How can you solve an equation with a variable on both sides? complete the explanation. you can solve the equation by using *(blank)* operations to get the variable terms on one side of the equal sign and the constant terms on the *(blank)* side. then *(blank)* both sides by the coefficient of the resulting variable term.

Really need on these. i have no idea what to do

Compare the cost of the bike trips from the two companies shown. for both the cost in a linear function of the number of days which statements is true