Question

500 supra 400 X ==0

3X-1=4X+2

2(X-5)=5

4X= 1 supra 2 ori X

3(x+2)-4(x+1)=2(x-3)+14

2x-1 supra 2 = x-2 supra 3

Answer 1

( 500 / 400 ) x = 0 ⇒ x = 0

3 X - 1 = 4 X + 2

3 X - 4 X = 2 + 1

- X = 3

X = - 3

____________

2 ( X - 5 ) = 5

2 X - 10 = 5

2 X = 5 + 10

X = 15 / 2 = 7 intregi si 1 / 2

V: 2 ( 15 / 2 - 10 / 2) = 2 ×( 5 / 2) = 5

_______________________

4 X = (1 / 2) X

8 X = X ⇒ X = 0

_________________

3( x + 2 ) - 4 ( x + 1 ) = 2 ( x - 3 ) + 14

3 x + 6 - 4 x - 4 = 2 x - 6 + 14

- x - 2 x = 8 - 2

- 3 x = 6

x = 6 : ( - 3 )

x = - 2

____________________

(2 x-1) / 2 = ( x-2) / 3 ⇒ 3 ( 2 x - 1 ) = 2 ( x - 2)

6 x - 3 = 2 x - 4

6 x - 2 x = - 4 + 3

4 x = - 1

x = - 1 / 4