Question

if a = - 8 , b = 7 , c = 6 , verify ( a + b ) + c = a + ( b + c )​

Answer 1

SOLUTION:-

In the question,

a= -8

b= 7

c= 6

This is associative property of addition

(a+b)+c=a+(b+c)

Now as per question, we substitute the given values of a,b and c.

(-8+7)+6=-8+(7+6)

-1+6=-8+13

5=5

LHS=RHS

Therefore , we can state that (a+b)+c=a+(b+c) as the associative law of addition

Answer 2

$\huge{\underline{\mathfrak{Solution:}}}$

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$\sf{\large{\underline{\underline{Given \colon}}}}$

$\sf a = -8 \\ \sf b = 7 \\ \sf c = 6$

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$\sf{\large{\underline{\underline{To \: Prove \colon}}}}$

$\sf ( a + b ) + c = a + ( b + c )$

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$\sf{\large{\underline{\underline{Prove \colon}}}}$

$\because\sf ( a + b ) + c = a + ( b + c ) \\ \sf \to ( - 8 + 7) + 6 =- 8 + (7+ 6 ) \\ \sf \to - 1 + 6 = - 8 + 13 \\ \to \boxed{\boxed{\sf 5 = 5}} \\ \sf \therefore LHS = RHS \\ \\ \sf \boxed{ \boxed{\blue{ \sf Hence \: Proved...... }}}$

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