Proporciya:
Найдите x из пропорции:
a*3-25a 3a*2-15a
2a+10 = x
x= ((2a+10)(3a*2-15a))/a*3-25a = (6a*3 - 30a*2 + 30a*2 - 150a)/a*3-25a= (6(a*3-25a))/a*3-25a = 6
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x= ((2a+10)(3a*2-15a))/a*3-25a = (6a*3 - 30a*2 + 30a*2 - 150a)/a*3-25a= (6(a*3-25a))/a*3-25a = 6