Respuesta:
5x=70+30
5x=100
x=100/5
x=20
x+7x=60
8x=60
x=7.5
Espero que te ayude
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Verified answer
Respuesta:
5x=70+30
5x=100
x=100/5
x=20
x+7x=60
8x=60
x=7.5
Espero que te ayude