Jak obliczyć 4x3 1/2 +4 x 4/5 +4 x2/10 wiem ile to jest ale nie wiem jak policzyć :D gdzie jest np 1/2 to jest ułamek jedna druga
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4 * 3 1/2 + 4* 4/5 +4*2/10 =
=4*7/2 + 16/5 +8/10 =
=28/2 + 16/5 +8/10 =
= 140/10 +32/10 +8/10 =
=180/10=
=18