a fost răspuns

a) 2( x +3 ) + 5(1 -2x )= 2-x-3(x+1)

Răspuns :

Miky93ask
2x+6 +5-10x =2-x -3x-3

-8x +11= -4x -1

-8x+4x =-1-11

-4x =-12 |: (-4)

x=3
Ctinamaria31xxxask
2( x +3 ) + 5(1 -2x )= 2-x-3(x+1)
2x+6+5-10x=2-x-3x-3
6+5-2+3=-x-3x-2x+10x
12=4x
x=12:4
x=3