Question

(-4)+(-7)=(-7)+?





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Answer 1

Answer:

$( - 4) + ( - 7) = ( - 7) + ( - 4) \\ - 11 = - 11$

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Answer 2

Solution

Let's keep the unknown value be "x"

$\implies \: - 4 + ( - 7) = ( - 7) + x$

$\implies \: - 11 = \: - 7 + x$

$\implies \: - 11 + 7 = x$

$\implies \: x = - 4$

To check:

$\implies \: - 4 + ( - 7) = ( - 7) + x$

$\implies \: - 4 + ( - 7) = ( - 7) + ( - 4)$

$- 11 = ( - 11)$

Therefore, hence verified.

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