Question

3(x-3)=15 (Solve and check the solution)​

Answer 1

$3(x - 3) = 15 \\ \\ 3x - 9 = 15 \\ \\ 3x = 15 + 9 \\ \\ 3x = 24 \\ \\ \\ x = \frac{24}{3} \\ \\ x = 8$

Answer 2

$Given \: simple \: equation : 3(x-3) = 15$

/* Dividing both sides by 3 , we get */

$\frac{3(x-3)}{3} =\frac{ 15}{3}$

$\implies x - 3 = 5$

/* Add both sides of the equation by 3 , we get */

$\implies x - 3 + 3 = 5 + 3$

$\implies x = 8$

Verification:

/* Put x = 8 in the problem , we get */

$LHS = 3 ( x - 3 )\\= 3 ( 8 - 3 ) \\= 3 \times 5 \\= 15 \:--(1)$

$RHS = 15 \: --(2)$

$\therefore LHS = RHS$

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