Question

What number should replace each n ?

(i) 3(n+6) = (3×5)+(3×6)​

Answer 1

Step-by-step explanation:

(i) 3 (n + 6) = (3 × 5) + (3 × 6)

• 3n + 18 = 15 + 18
• 3n + 18 = 33
• 3n = 33 - 18
• 3n = 15
• n = $\frac{15}{3}$
• n = 5

Proof :-

LHS = 3n + 18 => 3(5) + 18 ==> 15 + 18 → 33

RHS = (3 × 5) + (3 × 6) => 15 + 18 → 33

Therefore, $\sf\fbox\pink{LHS \: = \: RHS }$ ✅

Answer 2

Answer:

5 should be replacing 'n' here

this problem shows the property of distributive law

3 (5 + 6)

3 × 11

33

3 × 5 + 3 × 6

15 + 18

33

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