解方程: 78×3x=3.6 x÷1.98=0.4 (4.5-x)×0.375=0.75 1/2x+2/3x=14 x-0.52x=3.2×0.15 1/2x+25%=10.
问题描述:
解方程:
78×3x=3.6 | x÷1.98=0.4 | (4.5-x)×0.375=0.75 | ||||||
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x-0.52x=3.2×0.15 |
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答
①78×3x=3.6 234x=3.6 234x÷234=3.6÷234 x=2145 ②x÷1.98=0.4x×1.98÷1.98=0.4×1.98&n...