39
punti
Livello 0
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43.1)
$-3x-6x = -12x+7$
$-9x = -12x+7$
$-9x+12x = 7$
$3x = 7$
$\dfrac{\cancel3x}{\cancel3} = \dfrac{7}{3}$
$x= \dfrac{7}{3}$ $(= 2,\overline3)$
43.2)
$2-3x-7+x = -4x-7$
$-2x-5 = -4x-7$
$-2x+4x = -7+5$
$2x = -2$
$\dfrac{\cancel2x}{\cancel2} = \dfrac{-\cancel2^1}{\cancel2_1}$
$x= -1$
57950
punti
Genius I