Answer:
first add the numbers that have the same variable s x7+8x=15x
then the numbers first add and then you subtract
1+7=8
3-8= -5
15x-5
To find the GCF of two numbers; List the prime factors of each number. Multiply those factors both numbers both have in common.
Answer:
54
Step-by-step explanation:
6(6)+3(9)-9
=54
Answer:
6.4
Step-by-step explanation:
By the Pythagorean Theorem:

Hope this helps!
Answer:
3
Step-by-step explanation:
its 3 just trust me