プリントゆうえんち 問題1 1解答 問題2 2解答 3問題 3解答
分母の数がひとつだけのとき→それぞれの項に、その数をかける → 解が出る (例) 1 a = 3 → 4× 1 a = 3 ×4 4 4
4× 1 a = 3 ×4 → a = 12
4 (1) 1 a = 4 → 5× 1 a = 4 ×5 5 5
5× 1 a = 4 ×5 → a = 20
5 (2) 1 a = -6 → 7× 1 a = -6 ×7 7 7
7× 1 a = -6 ×7 → a = -42
7 分母の数がひとつだけのとき→それぞれの項に、その数をかける → 生き残り係数を割る→解が出る (例) 3 a = 6 → 5× 3 a = 6 ×5 5 5
5× 3 a = 6 ×5 → 3a=30 3a = 30 a=10
5 3 3 (3) 3 a = 12 → 4× 3 a = 12 ×4 4 4
4× 3 a = 12 ×4 → 3a=48 3a = 48 a=16
4 3 3 (4) 5 a = 10 → 6× 5 a = 10 ×6 6 6
6× 5 a = 10 ×6 → 5a=60 5a = 60 a=12
6 5 5 (5) 2 a = -4 → 3× 2 a = -4 ×3 3 3
3× 2 a = -4 ×3 → 2a=-12 2a = -12 a=-6
3 2 2 (6) 4 a = 4 → 5× 4 a = 4 ×5 5 5
5× 4 a = 4 ×5 → 4a=20 4a = 20 a=5
5 4 4