Question

Află numerele necunoscute
a) 81:x=3×3
b)48+x:5=50
c) 50-80:x=40
ESTE URGENT​

Answer 1

Răspuns:

Explicație pas cu pas:

$\bf 81:x=3\cdot 3$

$\bf 81:x=9$

$\bf 81=9x$

$\bf x=81:9\implies \red{\underline{x=9}}$

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$\bf 48+x:5=50$

$\bf x:5=50-48$

$\bf x:5=2$

$\bf x = 2\cdot 5\implies\purple{\underline{x=10}}$

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$\bf 50-80:x=40$

$\bf 50=40+80:x$

$\bf 50-40=80:x$

$\bf 10=80:x$

$\bf 10x=80$

$\bf x=80:10\implies\pink{\underline{x=8}}$

==pav38==

Answer 2

$\it a)\ \ 81:x=3\cdot3 \Rightarrow 81:x=9 \Rightarrow x=9\\ \\ b)\ \ 48+x:5=50|_{-48} \Rightarrow x:5=2 \Rightarrow x=10\\ \\ c)\ \ 50-80:x=40 \Rightarrow 50-40=80:x \Rightarrow 10=80:x \Rightarrow x=8$