Mathematics
Senior High
Solved
この計算がよく分かりません。手順を教えてください🙇♀️
y(2z-5)-5z = 10
両辺を2倍して25を加えて
2y(2z-5)-10z+25=45
2y(2z-5)-5(2z-5)=45
y(3z-5)-5z = 15
両辺を3倍して25を加えて
3y(3z-5)-15z+25 = 70
3y(3z-5)-5(3z-5)=70
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