QUESTION IMAGE
Question
what value of z is a solution to this equation?
12 = \\(\frac{z}{5}\\) + 13
z = -5
z = 5
Step1: Isoler la variable \( z \)
Pour isoler \( \frac{z}{5} \), soustrayons 13 des deux côtés de l'équation \( 12 = \frac{z}{5} + 13 \) :
\( 12 - 13 = \frac{z}{5} + 13 - 13 \)
\( -1 = \frac{z}{5} \)
Step2: Résoudre pour \( z \)
Multiplions les deux côtés par 5 pour obtenir \( z \) :
\( -1 \times 5 = \frac{z}{5} \times 5 \)
\( z = -5 \)
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\( z = -5 \)