Not sure if you are just looking for equations but it would be written as
1/4(r+10)=r-4
Solving would be
1/4r+10/4=r-4
26/4=3/4r
r=26/3 or 8.66
Answer:
15 years
Step-by-step explanation:
<u>Complete Question:</u>
<em>Ben is 4 times as old as Ishaan. 6 years ago, Ben was 6 times as old as Ishaan. How old is Ishaan now?</em>
<em />
Let Ben's age be "b" and Ishaan's age be "i"
Since Ben is 4 times as Ishaan, we can write:
b = 4i
Ben was 6 times as Ishaan, BUT 6 years ago, we setup the equation like shown below:
b - 6 = 6(i - 6)
Multiplying, we have:
![b - 6 = 6(i - 6)\\b-6=6i-36](https://tex.z-dn.net/?f=b%20-%206%20%3D%206%28i%20-%206%29%5C%5Cb-6%3D6i-36)
Now, we replace b with "4i" and solve for i (Ishaan's age now):
![b-6=6i-36\\4i-6=6i-36\\2i=30\\i=\frac{30}{2}\\i=15](https://tex.z-dn.net/?f=b-6%3D6i-36%5C%5C4i-6%3D6i-36%5C%5C2i%3D30%5C%5Ci%3D%5Cfrac%7B30%7D%7B2%7D%5C%5Ci%3D15)
Ishaan is now 15 years old
Remark
The distributive property works with 2 terms inside brackets and 1 term outside, or a common factor from 2 terms being taken out of both terms and put outside a set of brackts.
A is incorrect.
There is no multiplication in this operation at all anywhere. B is incorrect.
The commutative property says that a + b = b + a which is true in most math systems but that is not what happened here. C is not correct.
D is addition all right, but the signs are opposite. I would pick this as an answer, but hold your nose doing it.
Answer:
41
Step-by-step explanation:
First, set up the equation (2x+5) + (3x-2)+(3x)+(x)= 57. Add all of the sides together and solve for x. Next, plug in x to 2x+5, and you have your answer. I hope this helps
You just subtract 4 from 20
20-4 which is 16