Question

помогите пажалуста дам  1)14(2х-3)-5(х+4)=2(3х+5)+5х 2)9(3х-7)+3(8х-11)=3(9х+8) 3)6(7х-11)-13(х-6)=14(2х+1)

Answer 1

28х-42-5х-20=6х+10+5х
28х-5х-6х-5х=10+20+42
12х=72/:12
х=6

27х-63+24х-33=27х+24
27х+24х-27х=24+63+33
24х=120/:24
х=5

42х-66-13х+78=28х+14
42х-13х-28х=14+66-78
х=2