1 Answer

Josh Austin · Answer 1 · 2023-10-25T16:33:57+0000

Step-by-step explanation

Step 1

use distributive property

$\text{remember: a(b+c)=ab+ac}$

then

$\begin{gathered} 7(x-4)+28 \\ 7x-(7)(4)+28 \\ 7x-28+28 \end{gathered}$

Step 2

Add similar terms

$\begin{gathered} 7x-28+28 \\ 7x-0 \end{gathered}$

Step 3

when you have an expression, there is no change if you add cero, or substrate cero, no need to write it, then

$\begin{gathered} 7x-0 \\ 7x \end{gathered}$

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