Answer:
y=3
Step-by-step explanation:
The opposite sides of a rectangle are equal, so you can set up two equations:
18=10+2x
AND
10=2y+4
We are looking for y, so we can throw out the equation that involves the variable x.
10=2y+4
1) Subtract a 4 from both sides:
2y=6
2) Divide both sides by 2:
y=3
