Hola
3x-7=8
3x=8+7
3x=15
x=15÷3
x=5
comprobamos =
5+5+5-7=
15 -7=
8.
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Verified answer
Hola
3x-7=8
3x=8+7
3x=15
x=15÷3
x=5
comprobamos =
5+5+5-7=
15 -7=
8.