Question

Va rog apasati pe poza sa vedeti toate ex si ajutati ma rapid dau coroana​

Answer 1

Răspuns:

$\bf (a)\:\:\boxed{\bf x +2y+18=29}$

$\bf (b)\:\:\boxed{\bf 3x +6y+38=62}$

$\bf (c)\:\:\boxed{\bf 4x+4y+27=75}$

$\bf (d)\:\:\boxed{\bf 15x+60y+38=113}$

Explicație pas cu pas:

(a)

$\bf x +2y+13=24\:\Big|+5\:\:\text{\it adunam toata relatia cu 5}$

$\bf x +2y+13+5=24+5$

$\boxed{\bf x +2y+18=29}$

(b)

$\bf 3x +6y+19=43\:\Big|+19\:\:\text{\it adunam toata relatia cu 19}$

$\bf 3x +6y+19+19=43+19$

$\boxed{\bf 3x +6y+38=62}$

(c)

$\bf 2x+2y+38=62$

$\bf 2x+2y=62-38$

$\bf 2x+2y=24\:\Big|\cdot2\:\:\text{\it(Inmultim toata relatia cu 2)}$

$\bf 4x+4y=48\:\Big|+27\:\:\text{\it(Adunam toata relatia cu 27)}$

$\bf 4x+4y+27=48+27$

$\boxed{\bf 4x+4y+27=75}$

(d)

$\bf 5x+18+20y=43$

$\bf 5x+20y=43-18$

$\bf 5x+20y=25\:\Big|\cdot3\:\:\text{\it(Inmultim toata relatia cu 3)}$

$\bf 15x+60y=75\:\Big|+38\:\:\text{\it(Adunam toata relatia cu 38)}$

$\bf 15x+60y+38=75+38$

$\boxed{\bf 15x+60y+38=113}$

==pav38==