16 z3 + ( - 21 z3 ) :
Remove parentheses :
= 3 * 16 z - 3 * 21 z
= 48 z - 63 z
= - 15 z
hope this helps!.
Answer:
there are one thousand (1,000) meters in a kilometer. So, 5,000 plus 10,000 is 15,000 meters.
Step-by-step explanation:
The answer is 42+26=68 I just guessed and checked
