✨ Best Answer ✨
①と②と③の左辺と右辺を各々足すと
2x＋2y＋2z=18
よって
x＋y＋z=9・・・④
①と④より z=4
②と④より x=2
③と④より y=3
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✨ Best Answer ✨
①と②と③の左辺と右辺を各々足すと
2x＋2y＋2z=18
よって
x＋y＋z=9・・・④
①と④より z=4
②と④より x=2
③と④より y=3
Users viewing this question
are also looking at these questions 😉
