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3y+2 |
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=1・・・① |
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3 |
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3y+2 |
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=1 |
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分子に()をつけるのを忘れないようにする.
6×
(2x+1) - ×(3y+2)=・・・①’
2x+16y4=6
2x6y=6+=・・・①’’
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y-3 |
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=3・・・② |
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2 |
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4×
x+2-×y-3=
x+2-y+=12
x-2y=・・・②’
| ②’×2: |
2x |
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= |
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| ①’’: -) |
x |
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=9 |
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y |
=- |
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1 |
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②’に代入
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1 |
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)=4 |
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x+=4
x=
よって
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1 |
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スマホ用動画解説へ