Answer:

Step-by-step explanation:
So we have the equation (I'm assuming the brackets are synonymous with parentheses):

Distribute the left:

Add 15 to both sides:

Subtract 2w from both sides:

And we're done!
Edit: Typo
Answer:
im sorry i took long im not the best at math but since 10 equals r im not sure what you need to know but i think its 3+5r=80 i hope this help
Step-by-step explanation:
Answer:
x-intercept(s):
(
−
8
3
,
0
)
y-intercept(s):
(
0
,
−
4
)
Step-by-step explanation:
32black total/64total square =.5 chance of lading on black square