if 9m+57=87 then 9(m+6)=?
9m+57=87 then 9(m+6)=?
9m = 30
m = 3.33333
Substitute 3.3333 for m
That's what I had but it says the answer is 84
9(3.33333 + 6) =
9 * 9.33333 = 83.999999 = 84
Remember PEMDAS Do the calculations within the parentheses first.
https://www.mathsisfun.com/operation-order-pemdas.html
Thank you
You're welcome.
To solve the equation 9m + 57 = 87, you need to isolate the variable m. Here's how you can do it step by step:
1. Start by subtracting 57 from both sides of the equation: 9m + 57 - 57 = 87 - 57.
This simplifies to 9m = 30.
2. Next, divide both sides of the equation by 9 to solve for m: 9m/9 = 30/9.
This simplifies to m = 10/3 or approximately 3.33.
Now, to find the value of 9(m + 6), substitute the value of m that we just found into the expression:
9(m + 6) = 9(10/3 + 6)
To simplify further, you can rewrite 10/3 as a mixed number or a decimal:
9(3 1/3 + 6) or 9(3.33 + 6)
Now, perform the addition inside the parentheses:
9(9 1/3) or 9(9.33)
Finally, multiply 9 by 9 1/3 or 9.33, whichever form you prefer:
81 1/3 or 83.97
So, 9(m + 6) equals approximately 81 1/3 or 83.97, depending on the form used.