要使代数式5a+1/4与3(a+1/4)得值互为相反数,则a得值为?

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要使代数式5a+1/4与3(a+1/4)得值互为相反数,则a得值为?要使代数式5a+1/4与3(a+1/4)得值互为相反数,则a得值为?要使代数式5a+1/4与3(a+1/4)得值互为相反数,则a得值

要使代数式5a+1/4与3(a+1/4)得值互为相反数,则a得值为?
要使代数式5a+1/4与3(a+1/4)得值互为相反数,则a得值为?

要使代数式5a+1/4与3(a+1/4)得值互为相反数,则a得值为?
5a+1/4+3(a+1/4)=0,因为互为相反数的两个数相加等于0,a= -1/8

5a+1/4=-3(a+1/4)
5a+1/4=-3a-3/4
8a=-1
a=-1/8