Mathematics
jhiemmyluthfi99
2

the question says evaluate 2a-b/b when a=4 and b=-3. How would I start this problem?

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(2) Answers
BettieZumbrunnen

You would start by writing down the expression that you have to evaluate: 2a - b/b Then, get to work: -- Wherever you see 'a', put in 4 . -- Wherever you see 'b', put in -3 . 2(4) - (-3/-3) Can you handle that ? Hint: The thing on the right is a fraction with the same number on top and bottom. Any fraction like that is always equal to ' 1 '.

lyssie11234

[latex]\frac{2a-b}{b}\\\\substitute\ a=4;\ b=-3:\\\\\frac{2\cdot4-(-3)}{-3}=\frac{8+3}{-3}=-\frac{11}{3}=-3\frac{2}{3}[/latex] [latex]or\ if\ 2a+\frac{b}{b}=2a+1\ then\ for\ a=4\ and\ b=-3:\\\\2\cdot4-3=8-3=5[/latex]

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