Answer:
x = 3
Explanation:
we can see that the base angles of the triangle are the same, this means that this is an isoceles triangle and hence the sides are of the same length.
i.e (3x+10) = (6x + 1)
3x+10 = 6x + 1
6x - 3x = 10 - 1
3x = 9
x = 9/3 = 3