Question

2(x+1)-1=x
ajutati-ma

Answer 1

Răspuns: $\bf \red{\underline{x=-1}}$

Explicație pas cu pas:

$\bf 2\cdot(x + 1) - 1 = x$

$\bf 2x + 2 - 1 = x$

$\bf 2x + 1 = x$

$\bf 2x = x-1$

$\bf 2x - x=-1$

$\bf \red{\underline{x=-1}}$

Answer 2

...............

2(x+1)-1=x .  2x+2=x +1 . Si avem :

2x-x=1-2

=> x = -1