Answer:
z = 10
Explanation:
z -(-2) / 4 = 3
z + 2 / 4 = 3
z + 2 = 3 x 4
z + 2 = 12
z = 12 - 2
Hope that helps!
z=10
(z- -2) /4 =3
Multiply each side by 4
z - -2 = 12
Subtracting a negative is like adding
z+2 =12
Subtract 2 from each side
z+2-2 =12-2
z =10
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