Mathematics
Senior High
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上の二つの式を下のグラフに変えるにはどういう方法でやったらいいんでしょうか？？
x + 2y = 5
x - y = -1
t.
ubstitution, and (c) elimination.
4
・2
Equation 1
Equation 2
y
<(1,2)
2
x - y = -1
x + 2y = 5
4
X
Answers
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