Question

{120-2*[14+5* (x - 3)]}:4=8​

Answer 1

Răspuns: $\green{\underline{~\bf x=9~}}$

Explicație pas cu pas:

$\bf \{120-2\cdot[14+5\cdot(x-3)]\}:4=8~~~\bigg|\cdot4$

$\bf 120-2\cdot[14+5\cdot(x-3)]=32$

$\bf 120= 32 + 2\cdot[14+5\cdot(x-3)]$

$\bf 120-32 = 2\cdot[14+5\cdot(x-3)]$

$\bf 88 = 2\cdot[14+5\cdot(x-3)]~~~\bigg|:2$

$\bf 14+5\cdot(x-3) = 44$

$\bf 14+5\cdot(x-3) = 44-14$

$\bf 5\cdot(x-3) = 30~~~\bigg|:5$

$\bf x-3 = 6$

$\bf x = 6+3$

$\green{\underline{~\bf x=9~}}$

$==pav38==$