QUESTION IMAGE
Question
given ( m parallel n ), find the value of ( x ) and ( y ).
Step1: 利用平行线内错角相等
因为\(m\parallel n\),所以\((6x + 4)^{\circ}\)和\((9x - 14)^{\circ}\)是内错角,内错角相等,即\(6x + 4 = 9x - 14\)。
Step2: 解方程求\(x\)
对\(6x + 4 = 9x - 14\)进行移项,将含\(x\)的项移到一边,常数项移到另一边,得到\(14 + 4 = 9x - 6x\),即\(18 = 3x\),两边同时除以\(3\),解得\(x = \frac{18}{3}=6\)。
Step3: 求\(y\)的值
先求出\((9x - 14)^{\circ}\)的值,把\(x = 6\)代入\(9x - 14\),得到\(9\times6 - 14 = 54 - 14 = 40\),因为\(y^{\circ}\)和\((9x - 14)^{\circ}\)是邻补角,所以\(y + (9x - 14)= 180\),把\(9x - 14 = 40\)代入,得到\(y + 40 = 180\),解得\(y = 180 - 40 = 140\)。
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\(x = 6\),\(y = 140\)