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Consider the following equations and name the property of equality used to solve for the variable.

A. x + 3.75 = 7

B. –3b = 18

C. StartFraction m Over 5 EndFraction = negative 25

D. m – 4 = 9

User Thebiffboff
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2 Answers

21 votes
21 votes

Answer:

Other dude is right.

Explanation:

Be safe, have an amazing day. :)

User Akinuri
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Answer:

A. subtraction

B. division

C. multiplication

D. addition

Explanation:

Observe what is done to the variable. Choose the operation that turns the unwanted value into the appropriate identity element.

A. 3.75 is added. To make that value be 0, we subtract 3.75.

B. -3 is multiplied. To make that value be 1, we divide by -3.

C. m is divided by 5. To make that 1/5 multiplier be 1, we multiply by 5.

D. 4 is subtracted. To make that value be zero, we add 4.

_____

Additional comment

Since subtraction is the same as addition of the opposite, and division is the same as multiplication by the reciprocal, the only two properties we really need are the addition property and multiplication property. Your grader may disagree.

User Ezombort
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