Question

Află numărul A dacă:
110_[a-15×(252-15×16)]=18​

Answer 1

Răspuns:

110-[a-15×(252-15×16)]=18​

a-15×(252-240)=110-18

a-15×12=92

a=92+180

a=272

Answer 2

Răspuns: $\bf \red{\underline{a=272}}$

Explicație pas cu pas:

$\bf 110-[a-15\cdot(252-15\cdot16)]=18$

$\bf 110-[a-15\cdot(252-240)]=18$

$\bf 110-(a-15\cdot12)=18$

$\bf 110-(a-180)=18$

$\bf 110= 18+(a-180)$

$\bf 110= 18+a-180$

$\bf 110+180= 18+a$

$\bf 290= 18+a$

$\bf 290- 18=a$

$\bf 272=a$

$\bf \red{\underline{a=272}}$

==pav38==