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解方程.2(x-1.5)=5.4 (x+2.4)乘3=9.6 8乘(x+2.9)=72
(1) 2(x-1.5)=5.4
(2).(x+2.4)乘3=9.6
(3).8乘(x+2.9)=72
人气:107 ℃ 时间:2020-03-31 08:41:58
解答
1)2(x-1.5)=5.42x-1.5*2=5.42x-3=5.42x=5.4+32x=8.4x=8.4除以2x=4.22)(x+2.4)×3=9.63x+2.4*3=9.63x+7.2=9.63x=9.6-7.23x=2.4x=2.4除以3x=0.83)8×(x+2.9)=728x+2.9*8=728x+23.2=728x=72-23.28x=48.8x=48.8除...
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