To find the length of [tex]\(7x\)[/tex], we start by recognizing that the expression [tex]\(7x\)[/tex] signifies multiplying the variable [tex]\(x\)[/tex] by 7. This operation essentially scales the original length represented by [tex]\(x\)[/tex] by a factor of 7.
Let's assume a specific value for [tex]\(x\)[/tex]. For simplicity, let's start with [tex]\(x = 1\)[/tex].
1. Multiply [tex]\(x\)[/tex] by 7:
[tex]\[
7 \times 1 = 7
\][/tex]
Therefore, the length of [tex]\(7x\)[/tex] when [tex]\(x = 1\)[/tex] is 7.
So, the length of [tex]\(7x\)[/tex] is [tex]\( \boxed{7} \)[/tex].