6(x+0.4+1.2x)
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6(x+0.4+1.2x)=6(2.2x+0.4)=6x2.2x+6x0.4=13.2x+2.4
咨询记录 · 回答于2022-11-01
6(x+0.4+1.2x)
6(x+0.4+1.2x)=6(2.2x+0.4)=6x2.2x+6x0.4=13.2x+2.4
(y-2.6+17y)÷2
(y-2.6+17y)÷2=(18y-2.6)÷2=18÷2y-2.6÷2=9y-1.3
(y+2.6+17y)÷2
(y-2.6+17y)÷2=(18y+2.6)÷2=18÷2y+2.6÷2=9y+1.3
3.5a÷0.1+3.5α+0.1
100a÷4+0.025Ⅹ40a
3.5a÷0.1+3.5α+0.1=35a+3.5a+0.1=38.5a+0.1
100a÷4+0.025Ⅹ40a=25a+a=26a