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Addition and Subtraction of Integers

Solve-7-8--25

Question

Simplify:
$(- 7) - 8 - (- 25)$

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Solution

$(- 7) - 8 - (- 25)$
$= - 7 - 8 + 25$ [ $∵ (-) \times (-) = +$ ]
$= - 15 + 25$ [ $∵ - 7 - 8 = - 15$ ]
$= 10$
$∴ (- 7) - 8 - (- 25) = 10$

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