Question 399888: the numberical value if x=3 and y=9.
3(x+7y)=
Found 2 solutions by unlockmath, rapaljer:
Answer by unlockmath(1688)   (Show Source):
Answer by rapaljer(4671)  (Show Source):
You can put this solution on YOUR website! How does that Glade commercial go: "Plug it in, plug it in!"
x=3 and y=9
3(x+7y)
3(3+7*9)
Now you have to know the order of operations to know what to calculate first. The first step is to do what is inside the parentheses, and multiplication comes befoe addition:
3(3+63)
Next, add within the parentheses:
3(66)
198
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Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
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