expand 4(3z-7)
To expand 4(3z-7), we distribute the 4 to each term inside the parentheses:
4(3z-7) = 4 * 3z + 4 * -7
Multiplying each term:
= 12z - 28
Therefore, 4(3z-7) expands to 12z - 28.
4(3z-7) = 4 * 3z + 4 * -7
Multiplying each term:
= 12z - 28
Therefore, 4(3z-7) expands to 12z - 28.