Question

an ostrich that is 78 inches tall is 15 inches taller than 3 times the height of a kiwi. What is the height of a kiwi in inches

Answer 1

Turn this into an expression. The height of a kiwi is (k).
78=15+3k
Minus 15.
63=3k
Divide by 3.
21=k
A kiwi is 21 inches tall.

Answer 2

21 inches , because 78 inches minus 15 equals 63 which if divided by 3 equals 21