To find the value of x when line m is parallel to line n, you can use the property that when two lines are parallel, their corresponding angles are equal. In this case, you have two angles, m<1 and m<2, which should be equal:
m<1 = m<2
So, you can set the two angle expressions equal to each other:
17x - 30 = 7x + 18
Now, solve for x:
17x - 7x = 18 + 30
10x = 48
x = 48 / 10
x = 4.8
So, the value of x is 4.8.