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Evaluate 80 × a-2 for a = 4.
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use correct parenthesis
i can only assume 80a - 2
80*(4-2)= 80*2 =160
if it is of form 80(a-2)
According to BODMAS rule we can solve this problem first 80*a then from that sub -2 80*4=320 then 320-2=318
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if 80*a-2= 80*4-2= 320-2 =318
\[80 \times a-2\]Where a = 4, so the equation turns to...\[80 \times 4-2\]Then, you go on and remember to use PEMDAS:\[80 \times 4-2\]\[320-2\]\[318\]And you're done. Simple as that. ;]
thanks
A pleasure working with you and thank-you for using OpenStudy's mathematics section. :}
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