Răspuns :
Răspuns:
Salut
c)3(4|2x – 5| + 3x – 7) – 11 = 3(3x – 4) + 16
12•|2x-5|-21-11=-12+16
12•|2x-5|-32=4
12•|2x-5|=4+32
12•|2x-5|=36
|2x-5|=3
2x-5=3
2x-5=-3
x=4
x=1
x1=1. x2=4.
d)3(|2x+5|+2x-9)+10=5(x+2)+x-6
3•|2x+5|+6x-27=6x-6
3•|2x+5|-27=-6
3•|2x+5|=-6+27
3•|2x+5|=21
|2x+5|=7
2x+5=7
2x+5=-7
x1=-7. x2=7.
e)3(2|2x+3|+4x-9)-26=4(x+9)-23+8x
6•|2x+3|+12x-53=12x+53
6•|2x+3|-53=13
6•|2x+3|=13+53
6•|2x+3|=66
|2x+3|=11
2x+3=11
2x+3=-11
x=4
x=-7
x1=-7. x2=4.
==evergreen==