Answer:
2
Step-by-step explanation:
Step-by-step explanation:
substitude the y value into y in the first equation
-8-(12x-50)=30
-8-12x+50=30
you see it?
then solve
-8+50-30=12x
you got the value = 12x
then you divide with 12
finally you get x
Answer: 17.5 or 35/2
Step-by-step explanation:
(If you change 4/5 to a decimal, it makes this easier. 4/5 would be 0.8.)
23.6 = (12 + x)*0.8
23.6 = 9.6 + 0.8x
14 = 0.8x
17.5 = x
17.5 as an improper fraction would be 35/2.
8 chairs, 8 squared is 64,ie the amount of chairs in total