Where are the pairs. Only one x input must match to 1 y output
Answer:
21
Step-by-step explanation:
Angle K= 90 degrees so you substitute each number for x until you get 90 and 4(21)+6=90.
I think its 2 I'm not 100% though
Use Bidmas, solve all the inner brackets (), with first division, then multiplication then addition then subtraction
