Question

solve the following equation​

Answer 1

Answer:

z = 4

Step-by-step explanation:

(5z+1)/3 = 7

5z+1 = 21

5z = 20

z = 4

Answer 2

$\bf{\red{\underbrace{\underline{QUESTION}}}}$

$\implies \frac{5z + 1}{3} = 7$

$\bf{\blue{\underbrace{\underline{ANSWER}}}}$

$\implies \frac{5z + 1}{3} = 7$

$\implies 5z + 1 = 7 × 3$

$\implies 5z + 1 = 21$

$\implies 5z = 21 - 1$

$\implies z = \frac{20}{5}$

$\implies z = 4$

$_____________________________________$

$\boxed{PROOF\: \: OF \: \: THE \: \: EQUATION}$

$\therefore L.H.S.$

$\implies \frac{5z + 1}{3} \\ \\ \implies \frac{5\:×\:4\:+\:1}{3} \\ \\ \implies \frac{20 + 1}{3} \\ \\ \implies \frac{21}{3} \\ \\ \implies 7 =\:R.H.S.$

$\boxed{\boxed{\boxed{PROVED}}}$