Question

дам 30 баллов.......​

Answer 1

1. 7y-10y=11+16
-3y=27
y=-9

Answer 2

Ответ:

1)7у-11=10у+16

10у-7у=11+16

3у=27

у=27:3

у=9

2)4,6+0.6=0.3у-2.3

0.6у-0.3у=-2.3=4.6

0.3у=2.3

у=2.3:0.3

у=7.6

3)3(4х-1)=-7(х-2)

12х-3=7х-14

12х-7х=-14+3

5х=-11

х=-11:5

х=2.2

4)-(5x - 8) = -x

-5x + 8 = -x

8 = -x + 5x

8 = 4x

x = 8/4

х=2

5)5(0.3х+6)-4(0.2х-7)=-5

1.5х-30-0.8-28=-5

1.5х=0.8х=-30=28=5

2.3х=-63

х=-63:2.3

х=-27.3

6)0.9(4y-2)=0.5(3y-4)+4.4

3.6у-1.8-1.5у+2-4.4=0

3.6у-1.5у=4.4-2+1.8

2.1у=4.2

у=2.

Пошаговое объяснение:

на счёт 2 и 5 не уверена