Question

solve :
(a) (+7) + (-11). (b) (-7) + (-12).
(c) (5)-(-10) (d) (+10) + (-5)​

Answer 1

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Answer 2

Answer:

a) 7+(-11)= 7-11. [(+)×(-)=(-)]

= (-4)

b)-7+(-12)= 7-12

=(-5)

c) 5-(-10)= 5+10. [(-)×(-)=(+)]

= (+15)

d) 10+(-5)= 10-5

= (5)