Hola
15x+3=48
15x=48 -3
15x=45
x=45÷15
x=3
comprobamos =
15×3+3=
45 +3=48
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Hola
15x+3=48
15x=48 -3
15x=45
x=45÷15
x=3
comprobamos =
15×3+3=
45 +3=48