Question

solve for the value of z. (7z+7)° (9z-7)°

Explanation:

Step1: 对顶角相等，列方程

因为对顶角相等，所以\(7z + 7 = 9z - 7\)

Step2: 移项求解

移项可得：\(7 + 7 = 9z - 7z\)，即\(14 = 2z\)

Step3: 计算z的值

两边同时除以2，\(z = \frac{14}{2} = 7\)

Answer:

\(z = 7\)