Mathematics
Junior High
Resolved

至急です!中二の数学です!
連立方程式7x+2y=1
y=5x+9 を教えて欲しいです!お願いしますm(_ _)m

Answers

✨ Best Answer ✨

7x+2(5x+9)=1
7x+10x+18=1
17x=-17
x=-1
y=-5+9y
y=4
x=-1,y=4

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