1-a
Explicación paso a paso:
20 - 2x = 40
transpo
-2x = 40-20
por -1
-2x (-1) = 40-20
2x = 20
x = 20/2
x = 10
s = 10
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Verified answer
1-a
Explicación paso a paso:
20 - 2x = 40
transpo
-2x = 40-20
por -1
-2x (-1) = 40-20
2x = 20
x = 20/2
x = 10
s = 10