Question

rozwiąż równania:

a) 3x-1=5x

b) y-3= 9-y

c) 1/2z+6=z-1

d) 2w+3=4w-5

Answer 1

a)3x-1=5x

2x = -1

x = -0,5

b) y-3=9-y

2y = 12

y=6

c)1/2z+6=z-1

1/2z = 7

z=14

d)2w+3=4w-5

2w=8

w=4

Answer 2

a)

3x-1=5x

3x - 5x = 1

-2x = 1      /:(-2)

x = -1/2

 

b)

y-3= 9-y

y + y = 9 + 3

2y = 12     /:2

y = 6

 

c)

1/2z+6=z-1

1/2z - z = -1 - 6

-1/2z = -7     /*(-2)

z = 14

 

d)

2w+3=4w-5

2w - 4w = -5 - 3

-2w = -8     /:(-2)

w = 4