新聞雲

標題:

數學題！救命啊 ！

發問:

7Q=15+11Q-3 Q=?? 步罩唔該

• maths f4
• a-z 既positive alphabet
• China's festival

 

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最佳解答:

7Q=15+11Q-3 7Q=12+11Q 7Q-11Q=12 -4Q=12 Q=12/ -4 Q=-3

其他解答:

This is the simple maths question! First you must think Q is postive or negtive Then you can atart your matyhs queation 7Q=15+11Q-3 [Put the Unknown number in one side][CAUTION:when you cahnge the number to other side must + change to - & - change to +] 7Q-11Q=15-3 [nothing say in this step] -4Q=12 [divide 4 togrther] -Q=3 [simple part] Q=-3 ~~!!!![FINISH]!!!!~~ 2007-09-24 17:59:05 補充： matyhs=maths|||||7Q=15+11Q-3 7Q+3=15+11Q 7Q+3-15=11Q 7Q-12=11Q -12=11Q-7Q 4Q=-12 Q=-3|||||7Q=15+11Q-3 7Q=12+11Q 7Q-11Q=12 -4Q=12 Q=12/ -4 Q=-3 hope可以help到你|||||7Q=15+11Q-3 7Q=12+11Q -4Q=12 Q=12/-4 Q=-3|||||7Q=15+11Q-3 7Q=15-3+11Q 7Q=12+11Q 7Q-11Q=12 -4Q=12 -12=4Q -3=Q Q=-3|||||7Q=15+11Q-3 -15+3=11Q-7Q -12=4Q -3=Q Q=-3|||||7Q=15+11Q-3 7Q-11Q=15 - 3 -4Q = 12 Q = 12/-4 Q = -3|||||+3 = 15+11Q-7Q +3-15 = 4Q -12 = 4Q -12/4 = Q Q = -3