Answer :

Answer:

a = first number


b = second number




"The sum of two numbers is 20."


a + b = 20




"[The difference of two numbers] is 118."


a - b = 118




Add the two equations together:


(a + b) + (a - b) = 20 + 118




Simply and solve:


2a = 138


a = 69




Use one of the above equations to solve for the second number.


a + b = 20


a = 69


69 + b = 20


b = -49

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Rewritten by : Barada

Answer:

Step-by-step explanation:

69,-49