Answer:
<u>The answer for this equation is x = 7</u>
Step-by-step explanation:
1. Solve for x given that CE=36
9 + 3x + 6 = 36
3x + 15 = 36
3x = 36 - 15 (Putting x on the left side and all the numeric values on the right)
3x = 21
<u>x = 7 (Dividing by 3 at both sides)</u>
2. Proof of replacing x by 7
9 + 3 (7) + 6 = 36
9 + 21 + 6 = 36
<u>36 = 36</u>
<u>It proves that x = 7 is correct</u>
First deal there are 14 red and 6 black so fraction of red = 14/20 or 0.7
second deal there are 20 red and 10 black so fraction of red = 20/30 or 0.67
0.67 is closer to 1/2 that 0.7 so
c is the correct choice
<h3><u>The value of y is equal to (-4 - 3x)/4.</u></h3>
Because there are two variables and only one equation, we cannot solve for the exact value of y.
However, we can still get a value of y.
y - 4 = 3x + 5y
Subtract y from both sides.
-4 = 3x + 4y
Subtract 3x from both sides.
-4 - 3x = 4y
Divide all terms by 4.
(-4 - 3x)/4 = y
