Add the following:
(a) $ (-7)-8-(-25) $
(b) $ (-13)+32-8-1 $
(c) $ (-7)+(-8)+(-90) $
(d) $ 50-(-40)-(-2) $

To do:

We have to add the given expressions.
Solution:

We know that,
$[(-)\times(-)=(+)\times(+)=(+)]$

$[(-)\times(+)=(+)\times(-)=(-)]$
(a) $ (-7)-8-(-25)=-7-8+25$

$=25-(7+8)$

$=25-15$

$=10$

(b) $(-13)+32-8-1=32-(13+8+1)$

$=32-22$

$=10$

(c) $(-7)+(-8)+(-90)=-(7+8+90)$

$=-105$

(d) $50-(-40)-(-2)=50+40+2$

$=92$

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Updated on: 10-Oct-2022

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