1)4х+3=-16 2)-3х+2=5х-15 3)2х-7=-19 4)-4х+7=5х+1 5)3х-6=-20 6)-5х+8=х+2 7)4х-7=-21 8)4(3-2х)+24=2(3+2х) 9)0,2(5у-2)=0,3(2у-1) Срочно!!!!
Ответ:
1)4х+3=-16
4х=-16-3
4х=-19
х=-19/4
х=-4,75
2)-3х+2=5х-15
-3х-5х=-15-2
-8х=-17
х=-17/8
х=-2,165
3)2х-7=-19
2х=-19+7
2х=-12
х=-12/2
х=-6
4)-4х+7=5х+1
-4х-5х=1-7
-9х=-6
х=-6/9
х=-2/3
5)3х-6=-20
3х=-20+6
3х=-14
х=-14/3
6)-5х+8=х+2
-5х-х=2-8
-6х=-6
х=-6/6
х=-1
7)4х-7=-21
4х=-21+7
4х=-14
х=-14/4
х=-7/2
х=-3,5
8)4(3-2х)+24=2(3+2х)
12-8х+24=6+4х
-8х-4х=6-12-24
-12х=-30
х=-30/12
х=-5/2
х=-2,5
9) 0,2(5у-2)=0,3(2у-1)
1-0,4у=0,6у-0,3
-0,4у-0,6у=-0,3-1
у=-1,3
Пошаговое объяснение: