Question

90+2x+70+x+x+2x+40=360​

Answer 1

Răspuns:

$x = \frac{80}{3}$

Explicație pas cu pas:

160+6x+40=360

200+6x=360

6x=160

$x = \frac{160}{6} = \frac{80}{3}$

Answer 2

$\it90+2x+70+x+2x+40=360 \Rightarrow 200+5x=360|_{:5} \Rightarrow 40+x=72 \Rightarrow \\ \\ \Rightarrow x=72-20 \Rightarrow x=52$