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400:(10×y+360)+24=25

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Primăvară2017
400:(10×y+360)+24=25
400:(10×y+360)=25-24
400:(10×y+360)=1
10×y+360=400:1
10×y+360=400
10×y=400-360
10×y=40
y=40:10
y=4
400:(10 × y+360)=25-24. 400:(10×y+360)=1. inlocuim 10×y+360 cu p litera spre exemplu a. 400:a,=1. a=400×1=400. 10×y+360=400. 10×y=400-360=40. y=40:10=4

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