Question

Which of the following statements correctly illustrate the addition property of equality?

Check all of the boxes that apply.
If a = b, then a + c = b + c.
ООО
If x = y, then x + 2 = y-2.
If W + 2 = 7, then w + 2-2 = 7-2.
If z-z = 9,then z-**3=9-
DONE

Answer 1

x - y + z = 8

2x +3y -z= -2

3x - 2y -9z = 9

Explanation:

[1 - 1 1 8]

[2 3 -1 -2]

[3 -2 -9 9]