10 - x=
4x - 20=
10 + 20=
4x + x=
30 = 5x
30/5= x
6 =x
AYUDA :,V por favor
4x - 20=
10 + 20=
4x + x=
30 = 5x
30/5= x
6 =x
AYUDA :,V por favor
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10-x = 12
4x-20 = 80 así nomas