4) The reason for the second step is division property of equality.
5) The reason for the second step is Multiplication property of equality.
6) The reason for the third step is because of substitution property of equality.
How to Interpret Algebraic Properties of Equalities?
4) We are given that;
4x = -24
x = -6
Thus, the reason for the second step is division property of equality because both sides were divided by 4.
5) We are given;
(3x + 5)/2 = 7
Multiply both sides by 2 to get;
3x + 5 = 14
The reason is due to Multiplication property of equality.
6) We are given;
x = 4
y = 3x + 7
y = 3(4) + 7
The reason is because of substitution property of equality.
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