I needed help with this, find the value of y and measure B. you may give the exact answer or round to the nearest hundredth

Answer:
Step-by-step explanation:
two triangles are equal
angle B=angle K
10y+17= 14 y-3
10y-14y=-3-17
-4y=-20
y=-20/-4
angle B= 10y+17
angle B=10(5)+17