Respuesta:
a) 6+2x=14
2x=14-6
2x=8
x=8/2
x=4
b) 21-6x=27-8x
-6x+8x=27-21
2x=6
x=6/2
x=3
c) 9x+12=14(x-2)
9x+12=14x-28
12+28=14x-9x
40=5x
40/5=x
8=x
Explicación paso a paso:
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Respuesta:
a) 6+2x=14
2x=14-6
2x=8
x=8/2
x=4
b) 21-6x=27-8x
-6x+8x=27-21
2x=6
x=6/2
x=3
c) 9x+12=14(x-2)
9x+12=14x-28
12+28=14x-9x
40=5x
40/5=x
8=x
Explicación paso a paso: