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● 次の方程式を解きなさい [0E4-10]
| (1) | | | | | | | | | | | | | | | | 0.7 | + | 1.2 | x | − | 0.5 | x | = | −0.8 | x | − | 0.8 | | | | | | | | | | | | | | | |
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| (2) | | | | | | | | | | | | | | | | −0.9 | x | − | 1.2 | x | + | 1.2 | = | 0.4 | x | + | 3.2 | | | | | | | | | | | | | | | |
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| (3) | | | | | | | | | | | | | | | | 0.8 | x | + | 1.4 | x | − | 2 | = | −0.4 | x | − | 0.7 | | | | | | | | | | | | | | | |
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| (4) | | | | | | | | | | | | | | | | −0.1 | x | − | 1.3 | = | −1.1 | x | − | 3.1 | − | 0.2 | x | | | | | | | | | | | | | | | |
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| (5) | | | | | | | | | | | | | | | | −0.9 | x | + | 1.9 | = | −1.9 | x | + | 4.54 | − | 1.2 | x | | | | | | | | | | | | | | | |
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