Solving Two-Step Equations Math 1 https://www.google.com/search? q=Teacher+at+chalkboard+clipart&biw=1914&bih=966&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi_v7KPjtTPAhWKSiYKHabFCq IQ_AUIBigB#tbm=isch&q=two+step+equations+clipart&imgrc=RBblPeqpa94hXM%3A
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Solving Two-Step EquationsMath 1
https://www.google.com/search?q=Teacher+at+chalkboard+clipart&biw=1914&bih=966&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi_v7KPjtTPAhWKSiYKHabFCqIQ_AUIBigB#tbm=isc
h&q=two+step+equations+clipart&imgrc=RBblPeqpa94hXM%3A
What??? I just learned 1-step!
Relax. You’ll use what you already know to
solve 2-step equations.
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So, what’s first?You need to
break the equation into
two steps.
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STEP 1
The first step will be either adding or subtracting.
STEP 2
The second step will be either multiplying or dividing.
Let’s try a problem.
8x + 5 = 61This problem has addition, so we need to subtract first.
- 5 - 5 Whatever we do on one side, we have to do on the other.
8x 56=
Now, Step 2.
8x = 56This problem has multiplication, so we need to divide now.
Whatever we do on one side, we have to do on the other.8 8
x = 7
Let’s try another problem.
3a - 8 = 4This problem has subtraction, so we need to add first.
+ 8 + 8 Whatever we do on one side, we have to do on the other.
3a 12=
Now, Step 2.
3a = 12This problem has multiplication, so we need to divide now.
Whatever we do on one side, we have to do on the other.3 3
a = 4
Okay, let’s practice!Problem 1
-12 = -3x + 6
Answer
6 = x
Problem 2
-4x + 20 = 68
Answer
X = -12
More Practice Problems The goal is to get the variable by itself.
Leave the variable where it is, and move everything away from it.
Follow your steps for solving an equation.1) Undo addition/subtraction with subtraction/addition2) Undo multiplication/division with division/multiplication
Write your steps neatly.
Check to make sure your answer makes sense.Plug your answer back in for the variable in the original problem.Simplify, and make sure you get a true statement.
Now it’s your turn!Copy these problems onto your paper. Break each problem into 2 parts to solve.Show all of your work!
7f + 5 = 40
5q – 7 = 13
12t – 6 = 90
4y + 8 = -12
Just for fun!
• Above image from http://www.transum.org/Software/SW/Starter_of_the_day/starter_December23.ASP
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