From the course: Learning Algebra: Solving Equations
Unlock the full course today
Join today to access over 22,400 courses taught by industry experts or purchase this course individually.
Steps for solving a two-step equation
From the course: Learning Algebra: Solving Equations
Steps for solving a two-step equation
- Now that you've mastered one-step equations, our next job will be to solve two-step equations. An example of a two-step equation is 2y + 3 = 43. This is a two-step equation, because in order to get y by itself, on the left-hand side, we need to get rid of the 2 and the 3. Therefore, this is going to require two steps. The 3 in this equation is called the constant. It's a constant because it's a number that stands alone. Remember that the 2 in this equation is called a coefficient; a coefficient is any number that is multiplied by the variable. So, we need to get rid of the 3 and the 2, in order to solve the equation. Of course, there are rules that we must follow, in order to solve a two-step equation, and it's very important that you follow these rules in order. The first rule is that you always remove the constant, by adding or subtracting, so that means that we need to get rid of the 3 first. The second rule is to remove the coefficient or divisor, by multiplying or dividing. So,…
Practice while you learn with exercise files
Download the files the instructor uses to teach the course. Follow along and learn by watching, listening and practicing.
Contents
-
-
-
-
-
-
-
-
Steps for solving a two-step equation3m 44s
-
Solving a two-step equation1m 56s
-
Solving a two-step equation with a fraction as the coefficient2m 43s
-
Solving a two-step equation when you must combine like terms first2m 43s
-
Challenge: Solve two-step equations41s
-
Solution: Solve two-step equations10m 10s
-
-
-
-
-
-
-
-
-