2(0.3x+4）-5（0.2x-7）=9
0.6x+8-x+35=9
-0.4x=-34
x=85
2(0.3x+4）-5（0.2x-7）=9
3个回答
相关问题
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2(0.3+4)-5(0.2x-7)=9
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1.x^2-3x-18=0 2.x^2+3x-5=0 3.x^2-4x-7=0 4.3^2-6x-9=0 5.3x^2-
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解方程5x-2+1.8=3.6 7（x-1.2）=2.1 9.4x-0.4x=16.2 0.2x-0.4+0.5=3.7
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2(0.3X+4)-5(0.2X-7)=9 方程解
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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 1.X/0.24=2.4 2.3X+2.7-0.9=7.89 3.9.2X+0.8X=108 4.2.5X+48
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解方程.0.9*(9-X)=2.7 0.6X+20=26 8/（3X+1）=0.2 5X-2*0.3=4.4
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1/3*X-[(X+4.5)-7.2]=0.9
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解方程．x÷2.5=0.4 0.7x-2×0.9=8 5.4x+4.6x=7.2．
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解方程．x÷2.5=0.4 0.7x-2×0.9=8 5.4x+4.6x=7.2．