Question: 5 Which expression can be substituted for a in the top equation of the system below to solve the system by substitution 4x 8y 4

5 Which expression can be substituted for a in the top equation of the system below to solve the system by substitution 4x 8y 4 a 4y 8 O8 4y O4y 8 O8y 4 04 8y

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