Question

Znajdź niewiadomą Proszę o obliczenia

a) 4x - 5 = 3 + 3x

b) -3x -2 = 5x - 7

c) x - 5 = 7

d) 5x = 48 + 3x

e) 2x - 3 = 3 + 3x

f) x - 32 = 9x

g) 4x - 3 = 3 + 3x

h) 15 + 8x = -1

i) 2x - 24 = 21

j) -x + 4 = -3(x - 1)

Answer 1

a) 4x - 3x = 3 + 5

x = 8

 

b) -3x - 5x = 2-7

-8x = -5 / : (-8)

x = 5/8

 

c) x = 12

 

d) 2x = 48 / :2

x = 24

 

e) 2x - 3 = 3 + 3x

-x = 6 :* -1

x = -6

 

f) -8x = 32 /: (-8)

x = -4

 

g) x = 6

 

h) 8x = -16 / : 8

x = -2

 

i) 2x = 45 /:2

x = 22,5

 

j) -x + 4 = -3x + 3

2x = -1

x = -1/2