Respuesta:
7x - 3 = 5x + 7
7x - 5x = 7 + 3
2x = 10
x = 10/2
x = 5
E)5
26.
7x+3x=90
10x=90
x=9
C)9
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Respuesta:
7x - 3 = 5x + 7
7x - 5x = 7 + 3
2x = 10
x = 10/2
x = 5
E)5
26.
7x+3x=90
10x=90
x=9
C)9