Concepts
Solve for X
Solve for x #2
combining like terms
100

What is a variable?

An unknown quantity represented by a letter, such as x

100

Solve for x!

19-x=7

x=12

100

Solve for x!

x+17=73

x=56

100

10x+3x

13x

200

What is a term of x?

A quantity of x: x (1 x), 2x (2 x's), 3x (3 x's), and so on

200

7x=98

x=14

200

3x=93

x=31

200

18x-7x

11x

300

What are like terms? Give two examples!

Like terms are terms you can combine and simplify, for example, terms of x are like terms with other terms of x and numbers are like terms with other numbers.

Ex: 2x and 3x

6 and 11

300

2x+5=17

x=6

300

9x+4=76

x=8

300

2x+2+5x

7x+2

400

When solving a longer equation for x, do we separate like terms onto two sides first or combine them first?

Separate onto two sides first

400

5x-3=72

x=15

400

6x-3=51

x=9

400

3+9x-4x+19

5x+22

500

3x+20=7x

x=5

500

3x-25=8x

x=-5

500

13x+3-6x+4

7x+7

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