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a-b=2
2a + b - b = 12
2a = 12
a= 6
a - b = 2
6 - b = 2
b = 4
entonces quedaria
x+(x+2)=10
2x+2=10
2x=10-2
x=8/2
x=4
No. 1= 4
No. 2=6