Equation, Equation, Equation

One Step Equation

100

x+4=12

x=8

200

4x=88

x=22

300

x/2=16

x=32

400

3.5x=56

x=16

Two Step Equation

100

2x-4=0

x=2

200

3x-27=33

x=20

300

4x+20=124

26

400

5x-25=300

x=65

500

0.25x-4=16

x=80

Three Step Equation

200

3x+6-9=27

x=10

300

4x+7x-44=99

x=13

400

4x+3=2x+9

x=3

500

3x-8=x+24

x=16

Mystery

200

等式/方程

equation

300

Sam saved 80 dollars into his bank account. He now has 430 dollars. How much did he have before saved his money. Write the equation.

x-80=430

400

You and your friend drive toward each other. The equation 50h = 190 - 45h represents the number h of hours until you and your friend meet. When will you meet?

2 hours

500

一个长方形菜地的周长是96米，长是宽的4倍，问长和宽各是多少米？

解：设宽为x米

2（x+4x）=96

10x=96

x=9.6

9.6×4=38.4（米）

答：长是98.4米，宽是9.6米。