Question

Answer fast pleaseeee :)

Answer 1

option D

Explanation:

In Alder's work, to remove +1/2 Alder subtracted 1/2 on both sides

If a = b , then a-c = b-c is the subtraction property of inequality

Alder used subtraction property of inequality for solving.

So Alder's work is correct.

In Erika's work, to remove +1/2 Erika added -1/2 on both sides

If a = b , then a + c = b+c is the addition property of inequality

Erika used addition property of inequality for solving.

So Erika's work is also correct.

Both Alder and Erika solved it correctly. Because either addition or subtraction property can be used for solving

Answer 2

The correct answer option is 'both Adler and Erika solved for k correctly because either the addition property of equality or the subtraction property of equality can be used to solve for k'.

Explanation:

Both Adler and Erika have solved for k correctly since both the properties, addition property of equality and subtraction property of equality, can be to solve for k.

The fraction
`(1)/(2)` has to be subtracted from both the sides so even if it is added, the negative sign still would make it subtracted from both the sides.