step one: add all the variables if they have the same letter
step two: since they are all adding the constants to the variable. add the constants together.
step three: set up your equation.
your equation should be: 9x+22=180
step four: get rid of the constant (22) by doing the opposite of operation (subtraction or addition) that is being used. once you do that do the operation you choose to get rid of the 22 with do it to the total.
it should look like the picture.
step five: to get rid of the coefficient do the opposite of the operation which in this case are multiplying. so by dividing by 9 you get rid of the 9 next to the x and once you divide the 158 by 9 the quotient is the valve of the x.
step six: now multiply the valve of x by 9 and add the 22. then subtract what you get with 180.
now you have your answer