Evaluate and simplify the expression when A=4 and b=- 1

Ehud Kaldor asked Nov 12, 2023

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6 votes

Ehud Kaldor asked Nov 12, 2023

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21 votes

Since the given expression is

Since a = 4 and b = -1

Substitute them in the expression above

$\begin{gathered} (5-2(a+3b))/(2)=(5-2(4+3\lbrack-1\rbrack))/(2) \\ =(5-2(4+\lbrack-3\rbrack))/(2) \end{gathered}$

Simplify the bracket

$\begin{gathered} (5-2(4-3))/(2)=(5-2(1))/(2) \\ =(5-2)/(2) \end{gathered}$

Simplify the numerator

The missing is 3

Aidan Ewen answered Nov 18, 2023

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