等于6啊,
0.7x+0.4x=6.6
1个回答
相关问题
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x²-x-6=0 x²+x-6=0 x²+7x+6=0 x²-7x+6=0 x&
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(6)0.5x-0.6=0.7x-1.4+8.6
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解方程 (6x-0.6)/7-(9x-0.4)/4=-(4x+0.1)/3
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解方程.0.35x=7 x÷0.2=0.5 x+0.42=4.2 x-4.6=6.4.
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解方程.0.35x=7 x÷0.2=0.5 x+0.42=4.2 x-4.6=6.4.
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4-6x/0.01-6.5=0.03-3x/0.03-7.5
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4−6x0.01−6.5=0.02−2x0.02−7.5.
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解方程:①4.2+0.5x=5.6;②x- 3 5 x = 2 7 ;③ 4 0.6 = x 0.9 .
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解方程:4x-0.8=4x-(7.2+0.8)=0.75 0.7x÷1.4=0.6.
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4.8x+6x*0.7=54