
New Member
Subtracting Integers  Need Help Solving these problems
Question on his homework:
Match the subtraction expression with the equivalent addition expression.
#3. 77 #4. 7(3) #5 7(3) #6. 73
A. 7 +3 B. 7 +(3) C. 7 + (3) D 7 + 3

Elite Member
The operation of subtraction is the same as "adding the opposite".
In other words, subtracting a positive number from something is the same as adding its negative.
EGs:
10  4 is the same as 10 + (4)
3  1 is the same as 3 + (1)
Likewise, subtracting a negative number from something is the same as adding its positive.
EGs:
10  (4) is the same as 10 + 4
3  (1) is the same as 3 + 1
Therefore, to rewrite subtraction as addition, we must change the sign of the number.
If you're still unsure how this works, please let us know.
Cheers ~ Mark
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