2x-5<3
2x<3+5
2x<8
2x÷2<8÷2
x<4
4x+7>x-2
4x-x>-2-7
3x>-9
3x÷3>-9÷3
x>-3
x<4とx>-3から、
-3<x<4
Mathematics
Senior High
この答えと解き方を教えてください
連立不等式を解くには, それぞれの不等
を求めればよい。
問9 次の連立不等式を解け
2x-5<3
14x+7>x-2
例題 3
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