Question

rozwiąż równania

3-5y-8y+4+4y=25
-16+15x+4x-22=8x-27
7p-18+3p-28-5p-8p=2p
5x-3+2x=4x+9-x
3y-2+5y=4y+8-y
-6x+13-2x=13-5x+15
7z+6+4z=9-2z+10

Answer 1

3-5y-8y+4+4y=25

4y - 5y-8y = 25-3-4

-9y=18 /:(-9)

y=-2

 

-16+15x+4x-22=8x-27

15x+4x-8x=16-27+22

11x=11/:11

x=1

 

7p-18+3p-28-5p-8p=2p

-18-28=2p+8p+5p-3p-7p

-46=5p /:5

p=9.2

 

5x-3+2x=4x+9-x

5x+2x+x-4x=9+3

4x=12 /:4

x=3

 

3y-2+5y=4y+8-y

3y+5y+y-4y=8+2

5y=10 /:5

y=2

 

-6x+13-2x=13-5x+15

-6x-2x+5x=13+15-13

-3x=15 /:(-3)

x=-5

 

7z+6+4z=9-2z+10

7z+4z+2z=10+9-6

13z=13 /:13

z=1

 

 

 

Answer 2

a)
3-5y-8y+4+4y=25
-9y = 18     /:(-9)
y = -2

b)
-16+15x+4x-22=8x-27
11x = 11     /:11
x = 1

c)
7p-18+3p-28-5p-8p=2p
-5p = 46     /:(-5)
p = -9,2

d)
5x-3+2x=4x+9-x
4x = 12     /:4
x = 3

e)
3y-2+5y=4y+8-y
5y = 10    /:5
y = 2

f)
-6x+13-2x=13-5x+15
-3x = 15     /:(-3)
x = -5

g)
7z+6+4z=9-2z+10
13z = 13     /:13
z = 1