18, because cats would be 3, and then the dogs would be 6 times that, which would be 18. 18 + 3 = 21.
Step 1:Solve one of the equations for either x = or y = .
Step 2:Substitute the solution from step 1 into the other equation.
Step 3:Solve this new equation.
Step 4:Solve for the second variable.
I hope this helps!
Answer:
5.33 repeating
Step-by-step explanation:
Divide 16 by 3 to convert to meters