Answer:
a = 5
Step-by-step explanation:
assuming (a-1, 9) is in the form of (x,y):
9(a-1) - 5(9) = -9
9a - 9 - 45 = -9
9a = 45
a = 5
There you go. That’s the answer simplified with the work
What you do is "x" times 75/100 equals 60. Thus you get 80
the second one
Step-by-step explanation:
because if you see good the second one have the dimensional in the same way
Answer:
<u> y = 19/36</u>
Step-by-step explanation:
Assuming that what you want is the value of y, you can pass all the right side stuff to the left, and the y to the right:
2/3 + 15/6 = 6y
Then you can sum the fractions on the left by using the same denominators:
4/6 + 15/6 = 6y ==> 19/6 = 6 * y
then you can pass the 6 that is multiplying on the right to the left - now dividing:
<u> y = 19/36</u>
