Algebra
Lesson chapter3 lesson2
Vocabulary:
Addition Property of Equality- do opposit-subtract
equivalent equations- equations with the same solution
Subtraction Property of Equality- do opposit-add
solve an equation- finding all values of variales that make quation a trun statement
Examples:
Addition property of Equility-
8=8
8+2=8+2
10=10
Equivalent Equations-
L+3=7
L+3+4=7+4
L+7=11
Subtraction Property of Equility
14=14
14-7 14-7
7=7
Addition property of Equility-
8=8
8+2=8+2
10=10
Equivalent Equations-
L+3=7
L+3+4=7+4
L+7=11
Subtraction Property of Equility
14=14
14-7 14-7
7=7
More examples--
*r + 30 = -4
- 30 -30
r = -34
*j + 8.1 = 24.9
- 8.1 -8.1
j = 16.8
*h - 12 = -27
+ 12 +12
h=-15
check it -15 - 12 = -27
This page by: CJF, AJF
Online resources: Extra Examples
Self Check Quizzes
Additional Information:
Always put answer in problem to check to make sure you are right!!
Pictures: Sorry no Pictures
Online resources: Extra Examples
Self Check Quizzes
Additional Information:
Always put answer in problem to check to make sure you are right!!
Pictures: Sorry no Pictures