Answer:
4 and then 15
Step-by-step explanation:
X=7
100-30=70
70/10
x=7
hope this helps
If shapes are congruent, then they are mathematically equal (same dimensions, angles etc.). So just locate where the angle x is on both triangles, it should have a value on or a calculable value on the other. If you provide us with the actual sheet I could walk you through it.