Chapter 5.2. Equations involving Parentheses
1. We apply the distributive law of multiplication over addition to help us solve equations involving parentheses.
Recall a(x + b) = ax + ab
Solve equation 9(x + 1) = 2(3x + 8)
2. When working with equations, always apply the same action to both sides of the equation.
Solve equation 5(2x – 9)/3 -8 = 2x
Solve equation (3x + 2)/5 = (4x – 7)/6
3. Rewriting equations
Giving the formula A = ½ * (a + b)h, find the value of a when b = 13, h = 9, and A = 90.
4. Homework:
- Handout
- Two pages
- Workbook:
- Page 27: 4
- Page 28: 5
- Page 29: 11, 12, 13, 14
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