Answer:
Step-by-step explanation:
2. You can use the commutative property to write an equivalent expression : 1/2 + y
3. z cubed and 3z isn't equivalent expressions, because 3z is 3 times z, and z cubed is z times itself, 3 times.
4 and 5. The expressions 3(y+1) and 3y + 3 are equivalent for any values as they are the exact same expression.
(Break the bracket of 3(y+1), we get : 3(y+1) = 3.y + 3.1 = 3y +3)
6. 2(r+3) = 2.r + 2.3 = 2r + 6
7. 6(4s-1) = 6.4s - 6.1 = 24s - 6
8. 8t + 2 = 2(4t + 1)
