Answer:
-6y + 6 = -2(3y - 3)
Step-by-step explanation:
-6y + 6 = -2(3y - 3)
-6y + 6 = -6y + 6
Therefore, the equation has infinitely many solutions.
We can automatically see that we are dealing with a percent decrease because we are going from a smaller to a bigger number. We need to first find what percent of 140the number 84 is. to do this we can set up the following equation:
140/84=100/x (this equation is basically saying if 140 is 100(%) what would 84 be?)
solving for x here gives us x = (84 X 100)/140 = 60, so 84 is 60 percent of 140 which means 140 decreased by 40 percent.
Let me know if I can clear anything else up.
To find the decreased percentage,here's what we can do:

In this case,the eqaution would be:

Hope it helps!
Answer:
(x + 7)(x - 4) = x2 - 4x + 7x - 28 = x2 + 3x - 28
X actually equals the cube root of 6