Решите пожалуйста 1) (х-2)/6+х/2=(5х-2)/9 2) (5+2х)/3=(х-3)/5+(х+5)/2 3) (3×(х+1))/8+(2×(5-х))/3=(16-13х)/12 4) (5×(7-2х))/3-(4х-2)/9=(х-19)/2

1)(х-2)/6+х/2=(5х-2)/9 приводим к общему знаменателю (9(х-2)+27х)/54=(6(5х-2))/54 (9х-18+27)/54=(30х-12)/54 (9х-18+27х-30х-12)/54=0 (6х-6)/54=0 (6(х-1))/54=0 (х-1)/9=0 х-1=0 х=1 2)(5+2х)/3=(х-3)/5+(х+5)/2 (5+2х)/3=(2(х-3)+5(х+5))/10 (5+2х)/3=(2х-6+5х+25)/10 (5+2х)/3-(2х-6+5х+25)/10=0 (10(5+2х)-3(2х-6+5х+25))/30=0 (50+20х-6х+18-15х-75)/30=0 (-х-7)/30=0 -х-7=0 -х=7 х=-7 3)(3(х+1))/8+(2(5-х))/3=(16-13х)/12 (3х+3)/8+(10-2х)/3=(16-13х)/12 (3(3х+3)+8(10-2х))-2(16-13х)/24=0 (9х+9+80-16х-32+26х)/24=0 (33х+57)/24=0 33х+57=0 33х=-57 х=-57/33=-1целая 24/33=1 целая 8/11 4)(5(7-2х))/3-(4х-2)/9=(х-19)/2 (35-10х)/3-(4х-2)/9-(х-19)/2=0 (6(35-10х)-2(4х-2)-9(х-19))/18=0 (210-60х-8х-4-9х+171)/18=0 (-77х+377)/18=0 -77х+377=0 -77х=-377 х=377/77=4целых 69/77