Answer:
The correct justifications Kelsey used to solve this equation is:
1. distributive property
2. combine like terms
3. addition property of equality
4. division property of equality
Step-by-step explanation:
Given that,
Kelsey solved the following equation:
Step 1:
By distributive property,
a(b + c) = ab + bc
Therefore,
Step 2:
Combine the like terms
7x - 4x - 1 = 6
3x - 1 = 6
Step 3:
Addition property of equality
The property means that when we add the same number to both sides of an equation, the sides remain equal
3x - 1 = 6
Add 1 on both sides
3x - 1 + 1 = 6 + 1
3x = 7
Step 4:
Division property of equality
The Division Property of Equality means that when we divide both sides of an equation by the same non zero number, the sides remain equal
3x = 7
Divide both sides by 3
Thus the correct justifications Kelsey used to solve this equation is:
1. distributive property. 2. combine like terms. 3. addition property of equality. 4. division property of equality
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