Question

1) 0,3(5х-7) =3(0,2х+3,2) 2) 4(1,2х+3,7)-2,8=5,2х 3) (4 16у+11 14)415=23у +5 23

Answer 1

1)1,5х-2.1=0,6х+9.6
1,5х-0.6х=9,6+2,1
0.9х=11,7
х=11,7/0.9=13

Answer 2

реши плиз 2 и 3