Math Problem Statement

Solve the following equations using distribution to find x: 1. 7 + 5(x - 2) = 12 3. 7x + 3(4x - 8) = 109 5. -4x - 7(-3x - 6) = 195 7. 8(x + 5) + 4 = 60

Solution

I see there are several equations that require solving for xx using distribution. Let's go through each equation shown in the image.

Problem 1

Equation:
7+5(x2)=127 + 5(x - 2) = 12

Solution:

  1. Distribute the 55 across (x2)(x - 2): 7+5x10=127 + 5x - 10 = 12
  2. Combine like terms on the left: 5x3=125x - 3 = 12
  3. Add 33 to both sides: 5x=155x = 15
  4. Divide by 55: x=3x = 3

Problem 3

Equation:
7x+3(4x8)=1097x + 3(4x - 8) = 109

Solution:

  1. Distribute the 33 across (4x8)(4x - 8): 7x+12x24=1097x + 12x - 24 = 109
  2. Combine like terms on the left: 19x24=10919x - 24 = 109
  3. Add 2424 to both sides: 19x=13319x = 133
  4. Divide by 1919: x=7x = 7

Problem 5

Equation:
4x7(3x6)=195-4x - 7(-3x - 6) = 195

Solution:

  1. Distribute the 7-7 across (3x6)(-3x - 6): 4x+21x+42=195-4x + 21x + 42 = 195
  2. Combine like terms on the left: 17x+42=19517x + 42 = 195
  3. Subtract 4242 from both sides: 17x=15317x = 153
  4. Divide by 1717: x=9x = 9

Problem 7

Equation:
8(x+5)+4=608(x + 5) + 4 = 60

Solution:

  1. Distribute the 88 across (x+5)(x + 5): 8x+40+4=608x + 40 + 4 = 60
  2. Combine like terms on the left: 8x+44=608x + 44 = 60
  3. Subtract 4444 from both sides: 8x=168x = 16
  4. Divide by 88: x=2x = 2

Let me know if you need further details on any steps or additional problems solved!


Follow-up Questions:

  1. What is the distributive property and how does it work in equations?
  2. How do you combine like terms in equations?
  3. Why is it important to isolate the variable xx when solving equations?
  4. What methods can be used to check solutions after solving?
  5. How does one handle negative signs in distribution?

Tip:

When working with equations, always perform the same operation on both sides to maintain balance!

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Math Problem Analysis

Mathematical Concepts

Algebra
Distributive Property
Linear Equations

Formulas

Distributive property: a(b + c) = ab + ac

Theorems

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Suitable Grade Level

Grade 8