Question

Punctul 4 va rog frumos ofer coroana

Answer 1

2-(x-4)-3x=7=>
2-x+4-3x=7=>
2+4-4x=7=>
6-4x=7=>
-4x=-6+7=>
-4x=1=>
x=-1/4
S={-1/4}

Answer 2

2-(x-4)-3x=7 <=> 2-x+4-3x=7 <=> -x-3x=-2-4+7 <=> -x-3x=-6+7 <=> -4x=1 <=> x=-1/4
Răspuns: S={-1/4}