Question

помогите пожалуйста срочно ❤️☹️ дам 20 баллов ❤️☹️​

Answer 1

Ответ:

) 1,1х-2,5=0,6х

1,1х-0,6х=2,5

0,5х=2,5

х=5

2)6,75х=2,25х-9

9=2,25х-6,75х

9=-4,5х

х=-2

3)16-9,5у=3у+21

16-21=9,5у+3у

-5=12,5у

у=-2,5

4)1,25у+7,5=5у

5у-1,25у=7,5

3,75у=7,5

у=2

5)0,5х-7=-2/3х

0,5х+2/3х=7

1 1/6х=7

х=6

6)6у-2,8=2,5у

6у-2,5у=2,8

3,5у=2,8

у=0,8

надеюсь помогла❤️

Answer 2

Ответ:

$1)1.1x - 2.5 = 0.6x \\ 1.1x - 0.6x = 2.5 \\ 0.5x = 2.5 \\ x = 5$

$2)6.75x = 2 \frac{1}{4} x - 9 \\ 6.75x = 2.25x - 9 \\ 6.75x - 2.25x = - 9 \\ 4.5x = - 9 \\ x = - 2$

$3)16 - 9.5y = 3y + 21 \\ - 9.5y - 3y = 21 - 16 \\ - 12.5y = 5 \\ y = - 0.4$

$4)1 \frac{1}{4} y + 7.5 = 5y \\ 1.25y + 7.5 = 5y \\ 1.25y - 5y = - 7.5 \\ - 3.75y = - 7.5 \\ y = 2$

$5)6y - 2.8 = 2.5y \\ 6y - 2.5y = 2.8 \\ 3.5y = 2.8 \\ y = 0.8$

$6)0.5x - 7 = - \frac{2}{3} x \\ 1.5x - 21 = - 2x \\ 1.5x + 2x = 21 \\ 3.5x = 21 \\ x = 6$