The following pairs of equations are equivalent. describe the operation that occurred in the second equation. 3+9=12 and 3+9-5=12-5

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Step-by-step explanation:

A. Given the equation

Using the subtraction property of equality (subtracting 5 from both sides of equation), we'll get an equivalent equation

B. Given the equation

Using the addtion property of equality (adding 4 to both sides of equation), we'll get an equivalent equation

C. Given the equation

Using the division property of equality (dividing  both sides of equation by 2), we'll get an equivalent equation

D. Given the equation

Using the multiplication property of equality (multiplying  both sides of equation by 2), we'll get an equivalent equation

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step-by-step explanation:

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step-by-step explanation: