solving equations with substituting

​Chapter 11: Algebraic Equations

Lesson 1 - Solving equations using substitution

Equations - A statement that the values of two expressions are equal

​Example: 8 + x = 20

​The left side (8 + x) is equal to the right (20) if _________.

​Examples:

1.] 6x = 18

​x = 4 ________ (yes or no)

2.] y - 15 = 12

​y = 27 ________ (yes or no)

3.] 2h + 7 = 7

​h = 0 ________ (yes or no)

Multiple Choice

g + 9 = 45

g = 38

• Yes

• No

Multiple Choice

$$40\ -y^2$$ = 15

y = 5

• Yes

• No

Multiple Choice

$$d^2$$ = 81

d = 9

• Yes

• No

Multiple Choice

10v - 7 = 93

• v = 9

• v = 5

• v = 10

• v = 20

Multiple Choice

8x + 12 = 36

• x = 1

• x = 2

• x = 3

• x = 6

Multiple Choice

30 - 4p = 2

• p = 0

• p = 28

• p = 5

• p = 7

Poll

Rank your effort today:

0 = none

4 = Maximum effort

• 0

• 1

• 2

• 3

• 4