Question

• 8
Ce valori poate lua x, pentru ca relaţiile următoare să fie adevărate?

a) 10 003 + x ≤ 10 009

b) 64 028 > x + 64 025

c) 99 985 ≤ x + 99 980 < 99 990​

Answer 1

Răspuns: Ai rezolvarea mai jos

$\bf a) ~~10 003 + x \leq 10 009$

$\bf x \leq 10 009 - 10003$

$\bf x \leq 6\implies \pink{\underline{x \in \{..-2,-1,0,1,2,3,4,5,6\}}}$

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$\bf b) ~~64028 > x + 64025$

$\bf 64028 -64025>x$

$\bf 3 ~>~x$

$\bf x<3\implies \purple{\underline{x~\in~\{\ ...-2,-1,0,1,2\}~}}$

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$\bf c) ~~99985 \leq x+99980< 99990$

$\bf 99985-99980 \leq x+99980-99980< 99990-99980$

$\bf 5 \leq x< 10\implies \red{\underline{~x\in \{5,6,7,8,9\}~}}$

$==pav38==$