Int. 2 Equation Review

Int. 2 Equation Review

​Example: 1-Step Equations

​Solve.

Multiple Choice

Solve:     $$x-13=6$$  

• x=19

• x=13

• x=-9

• x=-2

​Example: 2-Step Equations

​Solve.

Multiple Choice

Solve:     $$9x-2=70$$  

• x=8

• x=2.3

• x=72

• x=-9

​Example: Variables on Both Sides

• ​Move all the variables to one side and the constants (plain #'s) to the other.

​

​Solve:

Multiple Choice

Solve:     $$-2x+1=3x+16$$  

• x=3

• x=3

• x=1

• x=-3

​Warm-up!

​Take out your notebook. Continue on the same page as last week.

​

​Solve. Round to the hundredths place if necessary:

​

​1.                                                                         2.

​Combining Like Terms

• Like terms have the same variable and same exponent

​

ex: 2x, 30x​​ ex:

​

• ​To combine like terms, add the coefficients (numbers) and keep the variables the same​

​Example: Equations with Like Terms

• ​First, combine like terms on each side individually

​

​Solve:

Multiple Choice

Solve:     $$8x-3x-10=20$$  

• x=9

• x=30

• x=6

• x=5

Multiple Choice

Solve. Round to the tenths place if necessary.

$$-6x+3x=4x-21+2x$$  

• -7

• -2

• 2.3

• 1.4