Предмет: Математика, автор: neinek

ребят помогите пж. 15 баллов
0,6(4х-14)-0,4(5х-1) при х= 4 целых 1/6

Ответы

Автор ответа: ivankrendelkov
1
2,4x-8,4-2x+0,4=0,4x-8=0,4(x-20)
При х= 4 целых 1/6 , 0,4(4 1/6-20)=
0,4( 25/6-120/6)=0,4*(-95/6)=4/10 * (-95/6)=производим сокращения и получаем -6 цел 1/3

neinek: спасибо
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