mary9590
15.07.2019 •
Mathematics
Which properties of equality justify steps c and f a. subtraction property of equality; multiplication property of equality b. multiplication property of equality; division property of equality c. addition property of equality; subtraction property of equality d. addition property of equality; division property of equality
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Ответ:
Option C and B
Step-by-step explanation:
In the question step C is 23 + 11 = -11 +(-4x) + 11
which is in the form of a + b = c + a
In step C we have added 11 on both the sides to eliminate 11 from right side of the equation.
property which signifies this step is
Addition property of equality :
In step 'f' expression is
In this step equation has been divided by -4 on both the sides to eliminate 4 from the numerator.
In this step division property of equality has been applied.
Therefore Option C and B are the correct options.
Ответ: