Question

Prosze o pomoc w rozwiązaniu.

Answer 1

a)      4x/3 -22x/5=-16

20x/15-66x/15=-16

-46x/15=-16

X=16*15/46

X=120/23=5(5/23)

b)      (2-x)/6+3(x-4)/6=2(3x+5)/6

(2-x+3x-12-6x-10)/6=0

(-4x-20)/6=0

X=-5

 

c)       -4(x+4)/20+5(2x-1)/20-20(x+2)/20=0

(-4x-16+10x-5-20x-40)/20=0

-14x-61=0

X=-61/14

d)      3(x+1)/9-2(-1+x)/9-3*1/9+x/9=0

(3x+3+2-2x-3+x)/9=0

2x+2=0

X=-1

e)      -3x+6-2<=x-5-4x

0<=-9

Brak rozwiazań

f)       7y-2y+8>=6-2+y

4y>=-4

y<=-1