Question

When attempting to do his homework, Mark incorrectly uses the addition property of equality below. Which statement would correct Mark’s error?

1) 8 + x = 2
2) 8 – 8 + x = 2
3) x = 2
A.
To balance the equation, Mark should also subtract 2 from the right side of the equation in step 2.
B.
To balance the equation, Mark should also subtract 2 from both sides of the equation in step 2.
C.
To balance the equation, Mark should also subtract 8 from the right side of the equation in step 2.
D.
To balance the equation, Mark should also add 8 to both sides of the equation in step 2.

Answer 1

Basically, what you do to one side of the equation, you do to the other.

8 + x = 2
8 + x (-8) = 2 (-8)
x = 2 - 8
x = -6 .... so option C works here...

Answer 2

Thanks would you mind helping me with other questions?? please

Answer 3

option A...