Download 2.2 The Addition Property of Equality Equivalent Equations: solution

2.2 The Addition Property of Equality
Equivalent Equations:
solution
Solving
Linear Equation in One Variable
Addition Property of Equality
Example
7=7
7+
=7+
What about subtraction?
Solve for x
x  7  10
x  .6  1.0
Does it matter what side of the equal sign the variable is on?
Try:
1. 5t  5  6t  2
2. 2x  3x  5  7  10x  3  6x  4
1
3
x
2
4
3. 6 2a  1  11a  6   7
Rewrite and solve the equation
1. The sum of two numbers is 12. If one number is 7, find the other.
2. The sum of two numbers is 23. If one number is x, write an expression
representing the other number.
3. An 8ft. board is cut into two pieces. If one piece is x ft. Write an expression to find
the other piece.
Assignment
p.94 2-50 even, 53, 58