Musze obliczyć te zadania:
5/7 razy 4.2-(jeden i jedna czwarta-0.5)=
cztery i jedna druga-2.4 podzielić na dwa i dwie trzecie dodać 1.4=
Poooomooocyyyy!Prosze to na dziś!!!proooszeeee
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Odpowiedż w załączniku jesli dobrze zrozumiałam
5/7 · 4,2 - (1 1/4 - 0,5) =
= 5/7 · 42/10 - (5/4 - 5/10) =
= 3 - (5/4 - 1/2) =
= 3 - (5/4 - 2/4) =
= 3 - 3/4 =
= 2 i 1/4 =
= 2,25
4 1/2 - 2,4 : 2 2/3 + 1,4 =
= 9/2 - 24/10 : 8/3 + 14/10 =
= 9/2 - 9/10 + 14/10 =
= 45/10 - 9/10 +14/10 =
= 59/10 - 9/10 =
= 50/10 =
= 5