multi step equations

Order of operations:

 

1. Solve what's inside the paranthesis

2. Multiply (*) / divide (:)

3. Add (+) / subtract (-)

 

 

4p + 5 - 7p = -1

5 - 3p  = -1      EITHER: Use the formula: a - b = -(b - a)

3p - 5 = 1

3p = 6

p = 2

 

 

OR: 

 

5 - 3p  = -1    Move the five over to the right side:

 

- 3p = -6      Multiply (*) both sides with -1:

 

3p = 6        Divide both sides by two

 

p = 2