作业帮6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)
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6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)
6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)
6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)
6a+13a=19a
6x-28-2.5x+30.5=(6x-2.5x)+(30.5-28)=3.5x+2.5
8a-(5a+8)=3a-8
(5x+7)-(4x+0.18)=(5x-4x)+(7-0.18)=x+6.82
6a+13a=19a 6x-28-2.5x+30.5=(6x-2.5x)+(-28+30.5)=3.5x+2.5 8a-(5a+8)=8a-5a-8=3a-8
(5x+7)-(4x+0.18)=5x+7-4x-0.18=(5x-4x)+(7-0.18)=x+6.82
6a+13a 6x-2.5x+30.58a-(5a+8) (5x+7)-(4x+0.18)
6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)
化简 6a+13a 6x-28-2.5x+30.5 8a-(5a+8） （5x+7）-(4x+0.18)
化简 6a+13a 6x-28-2.5x+30.5 8a-(5a+8) (5x+7)-(4x+0.18)
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