Question

Rozwiąż równania: a) 4x - 3 = 3x + 5 b) 5x + 2 = 7 - 3x c) 3(x - 1) = 0 d) -6(x +1) = 24 e) -7(x - 2) = 3x - 1 f) 4(x - 1) = 6(1 +x) Rozwiąż równania: a) 1 - ⁶₇x = ⁴₇ b) 6(¹₄x - 2) = 18 c) -2(2x - 1) = x₃ (czyt. x trzecich)

Answer 1

a) 4x - 3 = 3x + 5

x = 8

b) 5x + 2 = 7 - 3x

8x = 5

x = ⅝

c) 3(x - 1) = 0

3x - 3 = 0

3x = 3

x = 1

d) -6(x +1) = 24

-6x - 6 = 24

-6x = 30

x = -5

e) -7(x - 2) = 3x - 1

-7x + 14 = 3x - 1

-10x = -15

x=1,5

f) 4(x - 1) = 6(1 +x)

4x - 4 = 6 + 6x

-2x = 10

x=-5

 

a. 1 - ⁶/₇x = ⁴/₇

7 - 6x = 4

-6x = -3

x=2

 

b. 6(¹/₄x - 2) = 18

1,5x - 12 = 18

1,5x = 30

x=20

 

c. -2(2x - 1) = x/3

-4x + 2 = x/3

-12x + 6 = x

6=13x

x=⁶/₁₃