Firejay5
  • Firejay5
Identify the property that justifies the statement: If 4x - 3 = 7, then 4x = 10. -----> Is this substitution property?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Hero
  • Hero
Are you familiar with the properties of equality such as Addition Property of Equality or Subtraction Property of Equality?
Firejay5
  • Firejay5
yes
Hero
  • Hero
So which of those apply here? When you perform the following operation: \[4x - 3 + 3 = 7 + 3\] Which is adding 3 to both sides, what property is that?

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Firejay5
  • Firejay5
4x -3 = addition property
Hero
  • Hero
@Firejay5, 4x - 3 is not equal to the addition property. The operation that you perform to get from 4x - 3 = 7 to 4x = 10 uses the addition property of equality.
Hero
  • Hero
So which of those apply here? When you perform the following operation: \[4x - 3 + 3 = 7 + 3\] Which is adding 3 to both sides, what property is that?
Hero
  • Hero
Are you familiar with the properties of equality such as Addition Property of Equality or Subtraction Property of Equality?
Firejay5
  • Firejay5
yes
Firejay5
  • Firejay5
Isn't it substitution property
Firejay5
  • Firejay5
@Hero Is it not substitution property
Hero
  • Hero
No, it is not substitution property. You're confusing yourself. I know why you think it is substitution property. We haven't solved for x yet.
Hero
  • Hero
We're only trying to figure out the property that is used to get from 4x - 3 = 7 to 4x = 10
Hero
  • Hero
Trust me, there is no substitution property involved with adding 3 to both sides.
Hero
  • Hero
We're only trying to figure out the property that is used to get from 4x - 3 = 7 to 4x = 10
Firejay5
  • Firejay5
It's saying 4x = 10, replace 4x to 10 to get 10 - 3 = 7
Hero
  • Hero
Negative. That's not what it's saying. I explained it to you already. At this point, you're only confusing yourself.
Hero
  • Hero
Are you familiar with the properties of equality such as Addition Property of Equality or Subtraction Property of Equality?
Firejay5
  • Firejay5
10 - 3 = 7 is that not true
Hero
  • Hero
It's true, but substitution property has nothing to do with the question.
Firejay5
  • Firejay5
so you are trying to add 3 to both sides to get 10 and then divide 4x by 10
Hero
  • Hero
@Firejay5, I'm only going to show you this once more: |dw:1378340963340:dw|

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