Question

if3z-8=7thenfind the value of 5z
​

Answer 1

Answer:

25

Step-by-step explanation:

3z-8=7

3z=7+8=15

3z=15

z=15/3

z=5

5z=5×5=25

Answer 2

★ Given :

$\tt3z-8=7$

$\:$

★ To Find :

$\tt \: The \: value \: of \: 5z$

$\:$

★ $olution :

$\tt \: ➙ \: \: 3z - 8 = 7$

$\tt \: ➙ \: \: 3z = 7 + 8$

$\tt \: ➙ \: \: 3z = 15$

$\tt \: ➙ \: \displaystyle \tt \: z = \cancel\frac{15}{3}$

$\tt \: ➙ \: \: z = 5$

$\:$

$\tt \: ➜ \: \: 5z = 5 \times 5$

$\tt \: ➜ \: \: 5z = 25$

$\:$

$\:$

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