1- and 2-Step Equations

1-Step

100

x - 5 = 25

30

200

X-4=7

X - 4  =7
   +4     +4
X=11

CHECK! 11-4=11

300

x−21=6

x−21=6
  +21 +21 

x=27 

CHECK:27-21=6

400

k+10=27

k+10=27
  -10 -10 

k=17 

CHECK:17+10=27

500

29=p+20

  29=p+20
- 20     -20 

9=p 

Check: 9+20=29

2-Step

100

2h + 2 = 4

h = 1

200

29=5+8b

8b + 5= 29  
      -5   -5
8b=24
---  ---
8     8 

b=3          
Check: 8(3)+5=29

300

67=11n+1

67=11n+1
 -1        -1 
11n=66
/11   /11

n=6

Check: 67 = 11(6) + 1

400

3(q-7)=27

3(q-7)=27
------    ----
    3       3 

q-7=9
 +7 +7

q=16                  Check:3(16-7)=27 

500

(j/2)+7=12

(j/2)+7=12
     -7   -7
j/2 = 5
*2    *2

j=10

check: (10/2)+7=12

More 1-Step

100

What is the goal when solving equations

to get the variable alone

200

What step do I take to solve 15 = 3w?

Divide by 3 on both sides of the equal sign

300

a/7=9

a/7=9
x7 x7 

a=63 

Check:63/7=9

400

2=f/8

  2=f/8
x8   x8 

16=f 

Check:16/8=2

500

-2y=18

-2y=18
---   ---
-2    -2 

y= -9

Check: -2(-9)=18

Nothin but explaining

100

How are equations different from expressions?

Equations have equals signs and expressions do not!

200

When we solve equations, we use ________ operations.

Inverse

300

Checking 1-step equtions

Plug the answer you got in for the variable in the original equation and see if it is true.

400

Checking 2-step equations

Plug the value of the variable into the original equation and perform the operations (do) in order to see if it is true.

500

What are the steps to solving 3x + 5 = -13?

Subtract 5 from both sides, then divide both sides by 3

Random

100

What is your teacher's name?

Mr. Hanson

200

Who are one of the office ladies?

Tina

Rachel

300

What is KhS mascot?

Papemakers

400

What do you call a fake noodle?

An ImPASTA!!!

500

What is my room number?

1149 or 1152