I still can't understand this one.In class we got 42 but I got 48 and when I check it none of them match up
4/8y-21=3 What is y?
Assuming you copied the problem correctly, your answer is correct.
4/8y-21=3
4/8y = 3 + 21
4/8y = 24
y = 24 / (4/8)
y = 24 * (8/4)
y = 192/4 = 48
Proof:
1/2 (48) - 21 = 3
24 - 21 = 3
If you mean
(4/8)y - 21 = 3
then y=48 as you got.
If the question were
(4/8)y-21=0
then y=42
Thank you!
You're welcome.
To solve the equation 4/8y - 21 = 3 for the variable y, we can follow these steps:
Step 1: Simplify the equation by multiplying both sides by 8 to clear the fraction:
8 * (4/8y - 21) = 8 * 3
This simplifies to:
4y - 168 = 24
Step 2: Isolate the variable term by adding 168 to both sides of the equation:
4y - 168 + 168 = 24 + 168
This simplifies to:
4y = 192
Step 3: Solve for y by dividing both sides of the equation by 4:
4y/4 = 192/4
This simplifies to:
y = 48
Therefore, the value of y that satisfies the equation 4/8y - 21 = 3 is y = 48.