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11 votes
11 votes
NO LINKS!! Help me with the 2-Column Proof Part 1aa​

NO LINKS!! Help me with the 2-Column Proof Part 1aa​-example-1
User Philip Tzou
by
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2 Answers

20 votes
20 votes

3(x-4)+5=2(x-3)+4

3x-12+5=2x-6+4

3x-7=2x-2

x-7=-2

x=5

User Jong Bor Lee
by
3.3k points
10 votes
10 votes

Here is the two column proof:

Statement Reason

  • 3(x - 4) + 5 = 2(x - 3) + 4 Given
  • 3x - 12 + 5 = 2x - 6 + 4 Distribution property of multiplication
  • 3x - 7 = 2x - 2 Addition property of equality
  • 3x - 2x = - 2 - (-7) Subtraction property of equality
  • x = 5 Proved
User Paril
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3.3k points