已知a与b互为相反数,则0.5a+1/2b=( )已知a与b互为相反数,则0.5a+1/2b=( )

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已知a与b互为相反数,则0.5a+1/2b=( )已知a与b互为相反数,则0.5a+1/2b=( )

已知a与b互为相反数,则0.5a+1/2b=( )已知a与b互为相反数,则0.5a+1/2b=( )
已知a与b互为相反数,则0.5a+1/2b=( )
已知a与b互为相反数,则0.5a+1/2b=( )

已知a与b互为相反数,则0.5a+1/2b=( )已知a与b互为相反数,则0.5a+1/2b=( )

a与b互为相反数
∴a+b=0
∴0.5a+1/2b
=0.5a+0.5b
=0.5(a+b)
=0.5×0
=0

a与b互为相反数,则a+b=0
所以:0.5a+1/2b=0.5(a+b )=0

0.5a+1/2b
=0.5x(a+b) a和b是相反数 a+b=0
=0.5x0
=0