Respuesta :

Answer:

b= 25

Step-by-step explanation:

a+b =72

a-b = 22

2a = 94

DBS(Divide Both Side) by 2

a = 47

=47 +b =72

and:

47 -b =22

subtract 47 from both sides:

b=25

and

-b = -25 MBS(Multiply Both Side) by-1 ....>b=25

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