Answer:
x + y = 21x - y = 3
Step-by-step explanation:
Answer:
range is 10
Step-by-step explanation:
highest number is 49
loweest number is 39
49 - 39 = 10
Answer:
20+16= 36
Step-by-step explanation:
You subtract 6 from both sides, and then multiply by 6 on both sides. You should get -20.