8(2x – 14)+13 = 4x – 27We first multiply what we can.
16x-112+13=4x-27
Then we sum
16x-99=4x-27
Then we move all the number and separated from x
16x-4x=-27+99
we simplify
12x=72
Then we divide
x=72/12
x= 6
To solve this we put 6 instend of x
8(2(6) – 14) +13 = 4(6) – 27<span>we</span> <span>aolve</span> <span>teh</span> things in parenthesis
8(12-14)+13=24-27
8(-2)+13= 24-27
We <span>just solve</span>
-16+13= -3
-3=-3
So our answer is 6 since -3 does equal to -3
<span>x= -8 + y
-9x + 6y= 9
substitute </span>x= -8 + y into -9x + 6y= 9
-9x + 6y= 9
-9(-8 + y) + 6y= 9
72 - 9y + 6y = 9
-3y = -63
y = 21
<span>x= -8 + y
</span><span>x= -8 + 21
x = 13
solution (13, 21)</span>
Answer:
your answer is C. 31%
percentage of yellow marbles =
× 100
× 100
