Question

va rog, dau coroana .

Answer 1

Răspuns:

a=(⁵⁾1/3+³⁾1/5):1/2

a=(5/15+3/15)·2/1

a=8/15·2/1=16/15 → (adevarat ) a=16/15

b=1/2·(⁵⁾1/3-³⁾1/5)

b=1/2·(5/15-3/15)

b=1/2·2/15

b=(2/30)⁽²

b=1/15

Answer 2

Răspuns: $\red{\large\boxed{\bf a = \dfrac{16}{15} }}$

Explicație pas cu pas:

$\large\bf a=\bigg(\!{^{^{^{^{^{^{\displaystyle 5)}}}}}}}\!\!\!\dfrac{1}{3}+ \!{^{^{^{^{^{^{\displaystyle 3)}}}}}}}\!\!\!\dfrac{1}{5}\bigg):\dfrac{1}{2}$

$\large\bf a=\bigg(\dfrac{5}{15}+ \dfrac{3}{15}\bigg)\cdot\dfrac{2}{1}\implies a=\dfrac{5+3}{15}\cdot\dfrac{2}{1}$

$\large\bf a=\dfrac{8}{15}\cdot\dfrac{2}{1}\implies \red{\boxed{\bf a = \dfrac{16}{15} \longrightarrow~adevarat}}$

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$\large\bf b=\dfrac{1}{2} \cdot\bigg(\!{^{^{^{^{^{^{\displaystyle 5)}}}}}}}\!\!\!\dfrac{1}{3}- \!{^{^{^{^{^{^{\displaystyle 3)}}}}}}}\!\!\!\dfrac{1}{5}\bigg)$

$\large\bf b=\dfrac{1}{2}\cdot\bigg(\dfrac{5}{15}- \dfrac{3}{15}\bigg)\implies b=\dfrac{1}{2}\cdot\dfrac{5-3}{15}$

$\large\bf b=\dfrac{1}{\not2}\cdot\dfrac{\not2}{15}\implies \pink{\boxed{\bf b = \dfrac{1}{15} }}$

PS: Daca esti pe telefon te rog sa glisezi spre stânga pentru a vedea întreaga rezolvare.

Baftă multă!

#copaceibrainly