-0,354 + (-1,581) + (-0,312) + (-1,652) = -0,354 - 1,581 - 0,312 - 1,652 =
= -(0,354 + 1,581 + 0,312 + 1,652) = -3,899
Раскладываешь по формуле и сокращаешь:
(x-54)/25=77
x-54=77×25
x-54=1925
x=1871
(2x+46)/100=1
2x+46=100
2x=54
x=27
1/5+90)×0,1=10 где здесь должен быть х??
1) 175 : 7 х 3 = 75 км (3/7 от 175)
2) 175 : 7 = 25 км - проходили в один день
3) 25 х 3 = 75 км - прошли за 3 дня
Ответ: 3/7 пройдут за 3 дня, это 75 км.
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