Subtracting integers is the second operations on integers, among the four fundamental operations on integers.
Change the sign of the integer to be subtracted and then add.
(i) Subtract: +3 from +9
(+9) – (+3)
Here the +3 is subtracted from +9
= +9 – 3, [(+ 3) changes to (3)]
Now add +9 and 3 using the addition of integers rule.
= +6
(ii) Subtract:
7 from +12
(+12)  (7)
Here the 7 is subtracted from +12
= +12 + 7, [(7) changes to (+7)]
Now add +12 and +7 using the addition of integers rule.
= +19
(iii) Subtract: +8 from 18
(18) – (+8)
Here the +8 is subtracted from 18
= 18  8, [(+ 8) changes to (8)]
Now add 18 and 8 using the addition of integers rule.
= 26
(iv) Subtract: 4 from 11
(11) – (4)
Here the 4 is subtracted from 11
= 11 + 4, [(4) changes to (+4)]
Now add 11 and +4 using the addition of integers rule.
= 7
(v) Subtract: +44 from +99
(+99) – (+44)
Here the +44 is subtracted from +99
= +99 – 44, [(+ 44) changes to (44)]
Now add +99 and 44 using the addition of integers rule.
= +55
(vi) Subtract: 63 from +87
(+87)  (63)
Here the 63 is subtracted from +87
= +87 + 63, [(63) changes to (+63)]
Now add +87 and +63 using the addition of integers rule.
= +150
(vii) Subtract: +41 from 76
(76) – (+41)
Here the +41 is subtracted from 76
= 76  41, [(+ 41) changes to (41)]
Now add 76 and 41 using the addition of integers rule.
= 117
(viii) Subtract: 16 from 46
(46) – (16)
Here the 16 is subtracted from 46
= 46 + 16, [(16) changes to (+16)]
Now add 46 and +16 using the addition of integers rule.
= 30
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