1- and 2-Step Equations

1-Step

100

how do you solve 1-step equations?

To solve the one-step equations, isolate the variable by doing the reverse operation for the equation. So, if the variable is added with a number, subtract the number on both sides to isolate the variable. Similarly, do addition for a subtraction equation X-4=7 +4 +4 X=11 CHECK! 11-4=11

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 9+20=29

2-Step

100

Solving a 2-step equation is much like solving a 1 step equation. Use SADMEP to know where to start working. Do the subtraction or addition problem by using inverse operations. Then do the same with multiplication and division.

Ex=3x-10=20 +10 +10 Check=10x3-10=20 3x=30 ------- x=10

200

29=5+8b

8b+5=29 Check:3x8+5=29 -5 -5 8b=24 --------- 8 8 b=3

300

67=11n+1

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

400

3(q-7)=27

3(q-7)=27 ------------ q=16 3 3 Check:16-7x3=27 q-7=9 +7 +7

500

j/2+7=12

j/2+7=12 -7 -7 Check:10/2+7=12 j/2=5 2x2 5x2 j=10

More 1-Step

100

How do you solve multiplication/ Division 1-step equations

Just like with addition and subtraction 1 step equations, do division for a multiplication equation; do multiplication for a division equation. 2e=2 2/2 2/2 e=1 Check: 1x2=2

200

​5 ​-- =3 ​w

5 x5 - =3x5 w=15 w Check:15/5=3

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:16/2=8

500

-2y=18

-2y=18 --------- -2 -2 Check:-2y=18 y=19 12(19)=18

Nothin but explaining

100

One-step equations

 Undo subtraction by adding to both sides or undo addition by subtracting on each side. Do the same for multiplication and division

200

2-step equations

 solve the subtraction and addition left to right. Then do the multiplication/division. Then check

300

Checking 1-step equations

If you did subtraction to find your final answer you would add what you subtracted back to the end number. Do the same for multiplication division and addition.

400

Checking 2-step equations

Do the same thing you did for 1- step equations but 2 times. Multiply to undo division, then add to undo subtraction, Or what ever steps you had to take to find the answer.

500

There you go! now you know how to do 1-and 2-step equations!!! HAVE FUN!!

Random

100

What grade is the best ?

8th!!

200

What is the name of Mrs. Anderson's cat?

Mongo

300

What college does Mrs. May go to?

NIU

400

What do you call a fake noodle?

An ImPASTA!!!

500

Who's the best math teacher EVER?

MRS. MAY!!