Question

solve
7+(-7)=
25-(-31)=
(-12)-(-12)=
25+(-24)​

Answer 1

Answer:

(1) 0

(2) -56

(3) 0

(4) 1

Step-by-step explanation:

(1) because + - is always - then 7+ (-7)= + - = - then 7-7 = 0

(2) because - - is always + then 25 -(-31)= - - = + then 25 + 31 = -56

(3) first we change - - = + then (-12)+12 = 0

(4) + - = - then 25 - 24 = 1

Answer 2

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