Question

Z podanego wzoru wyznacz x !
prosze o obliczenia i poprawne wyniki ;)

Answer 1

a)

 

b)

 

c) 4(x + b) = 2b + c

4x + 4b = 2b + c

4x = 2b + c - 4b

4x = -2b + c

 

 

d)

Answer 2

1.

(x+a)/5 = b+1  I*5

x+a = 5(b+1)

x = 5(b+1)-a

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2.

1/2x+b = 3x-c

3x-c = 1/2x+b  I*2

6x-2c = x+2b

6x-x = 2b+2c

5x = 2(b+c)  /:5

x = 2(b+c)/5

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3.

4(x+b) = 2b+c

4x+4b = 2b+c

4x = 2b+c-4b

4x = c-2b  /:4

x = (c-2b)/4

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4.

7k-x = (x+b)/3  I*3

21k-3x = x+b

-3x-x = b-21k

-4x = b-21k   /:(-4)

x = (21k-b)/4

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