Question

Rozwiąż równania:
a) 2x-1/2(3x-2)=7/4-x
b)3x-2(1-2x)=0,5(3x+1,5)
c)3⅓ x+8=4 2/5x-8

Plisss. daje Najj ! <3

Answer 1

a) 2x - 1/2 (3x - 2) = 7/4x

2x - 3/2x + 1 = 7/4x

1/2x + 1 = 7/4x

7/4x - 1/2x = 1

1i 1/4x = 1/: 1 i 1/4

x = 4/5

b) 3x - 2(1 - 2x) = 0,5(3x+1,5)

3x - 2 + 4x = 1,5x + 0,75

7x - 2 = 1,5x + 0,75

7x - 1,5x = 0,75 + 2

5,5x = 2,75/:5,5

x = 0,5

c) 3⅓ x+8=4 2/5x-8

3⅓ x + 4 i 2/5x = -8 - 8

7 i 11/15x = -16/:7 i 11/15

x = -2 i 2/29

 

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Answer 2

a) 2x-1/2(3x-2)=7/4-x

2x-3/2x+2/2 = 7/4 - x

2x-1i1/2x +x = 7/4-1

1 i1/2 x = 7/4 - 1

3/2x = 3/4 /:3/2

x = 3/4*2/3

x = 1/2*1/1

x = 1/2

 

b) 3x-2(1-2x) = 0,5(3x+1,5)

3x -2+4x = 1,5x+0,75

3x+4x-1,5x = 0,75 + 2

5,5x = 2,75/:5,5

x = 0,5

 

c) 3i1/3x +8=4i2/5x-8

3i1/3x-4i2/5x = -8-8

3i5/15x-4i6/15 = -16

- 1i1/15x = -16

-16/15x = -16/:(-16/15)

x = 16*15/16

x = 1*15/1

x = 15