Question

Evaluate and match each expression on the left to its value on the right, when X=7 and Y=4

Answer 1

Given that

`x=7,y=4`

To Determine: The equivalent numbers to each of the expressions

Solution:

(a)

`\begin{gathered} 12+x,x=7 \\ 12+7=19 \end{gathered}`

(b)

`\begin{gathered} 3x+y,x=7,y=4 \\ 3(7)+4 \\ 21+4=25 \end{gathered}`

(c)

`\begin{gathered} 4y-10,y=4 \\ 4(4)-10 \\ 16-10=6 \end{gathered}`

(d)

`\begin{gathered} (1)/(2)xy| \\ =(1)/(2)*7*4 \\ =(28)/(2) \\ =14 \end{gathered}`