Page 160 - Math Course 1 (Book 1)

Equations with Grouping Symbols

All Numbers as Solutions
Solve 10a – 9 = 5(2a – 3) + 6.
Answer
A. 0
1
B. 1
5
C. The solution set is Ø.

D. The solution set is all numbers.

Skill Practice!

Solve each equation. Check your solution.
1. 2( g - 7) = 16 6. 5(x + 2) = 30

2. 3(2d + 7) = 39 7. 4(a - 2) = 3(a + 4)

3. 3( f + 2) + 9 = 13 + 5f 8. 2(x - 4) = 3(1 + x)

4. 2n + 5 = 4(n + 2) - n 9. 4(x + 3) = x

5. 2(c - 3) = 76 10. 7(x - 2) = 5(x + 2)

Find the dimensions of each rectangle. The perimeter is given.
11. P = 380 m 12. P = 640 yd 13. P = 220 ft
w w
2w - 40
w + 20 3w - 12 w

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