Sanjay solved the equation below. Which property did he use to determine that 7x + 42 = 42 is equivalent to 7x = 0?
2 answers:
For this case we have the following expression:

From here, we must clear the value of x.
For this, we apply the following property
:
- <em>Substraction property of equality:</em><em> Subtract the same number on both sides of equality.
</em>
We have then:

Answer:
he used Substraction property of equality
Subtraction property of equality
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