Explanation:
4(z + 7) = 4×z + 4×7 = 4z + 28
sorry, but this is so simple. so, what do you not understand about that yet ?
Answer: 4z + 28
We can distribute the 4 to each term inside the parenthesis.
So 4(z+7) = 4*z + 4*7
= 4z + 28
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