Question

ПОМОГИТЕ ПОЖАЛУЙСТА СРОЧНО!!!

$1.1x -2 frac{1}{2} = frac{3}{5}$
$6.75x = 2frac{1}{4} x - 9$
$16 - 9 frac{1}{2} y = 3y + 21$
$1 frac{1}{4} y + 7.5 = 5y$
$0.5x - 7 = - frac{2}{3} x$
$6y - 2frac{4}{5} = 2.5y$

Answer 1

1.1x -2 1/2=3/5
1.1x=0.6+2.5
1.1x=3.1
x=3.1:1.1
x=2 9/11

6.75x=2 1/4 x -9
6.75x 2.25x= -9
4.5x= -9
x= - 2

16 -9 1/2 y=3y+21
9.5y+3y=16-21
12.5y= -5
y= - 5:12.5
y= - 0.4

1 1/4 y+7.5=5y
5y -1.25y=7.5
3.75y=7.5
y=7.5:3.75
y=2

0.5x-7= -2/3 x
1/2 x+2/3 x=7
7/6 x=7
x=7 :7/6
x=7 *6/7
x=6

6y-2 4/5=2.5y
6y-2.5y=2.8
3.5y=2.8
y=2.8:3.5
y=0.8