Solving One and Two-Step Equations

Solving One and Two-Step Equations

 $=$  

 $5=5$  

Is this true?

 $\left(2\right)5=5\left(2\right)$  

Still True?

 $\left(2\right)5+2=5\left(2\right)+2$  

Still True?

 $\frac{\left(2\right)5+2}{3}=\frac{5\left(2\right)+2}{3}$  

Still True?

Open Ended

Why were each of the equations true?

Rule: Balance the Equal Sign

 $x+5=10$  

• Notice: It's given than x + 5 is equal to 10

• To figure out x, we must isolate it. 

• The only way to isolate x is to subtract 5 from the left side.

• To keep everything balanced we must subtract 5 from the right side.

Multiple Choice

19 + a = -50

• a = -950

• a = -69

• a = -31

• a = -50/19

Multiple Choice

19 + a = -50

• a = -950

• a = -69

• a = -31

• a = -50/19

Multiple Choice

7. -4y = 48

• x = -52

• x = -12

• x = -44

• x = -13

Multiple Choice

5. 6b = 30

• x = 36

• x = 24

• x = 180

• x = 5

Multiple Choice

Solve the equation below:

• k = 152

• k = 176

• k = 5

• k = 27

Multiple Choice

Solve for x:

• x = 20

• x = 7

• x = 10

• x = 3

Multiple Choice

In the equation 4y +-9 =-36

y = -4

• True

• False

Multiple Choice

Solve 3x - 7 = 32

• 13

• -13

• 12

• -12

Multiple Choice

Solve 2x - 3 = 1

• 3

• 2

• 1

• -2