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Use the equation $a = p - 2$ to find the value of $a$ when $p = 4$ . $\newline$ $a =$ ____

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Find a value using two-variable equations

Full solution

Q. Use the equation

a = p - 2

to find the value of

a

when

p = 4

.

\newline

a =

____

Step $1$ : Substitute $p$ with $4$ : Step $1$ : We know that $p = 4$ . Plug in the value for $p$ in $a = p - 2$ . $a = p - 2$ Substitute $p$ with $4$ . $a = 4 - 2$
Step $2$ : Solve for $a$ : Step $2$ : $a = 4 - 2$ . $\newline$ Solve for $a$ . $\newline$ $a = 4 - 2 = 2$ .

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