Question

va rog ajutor!! ?????​

Answer 1

a) 3x - 15 = 0

3x = 15

x = 5

b) 4x + 8 = 0

4x = -8

x = -2

c) 7x + 3 - 3x = 4x + 3

4x + 3 = 4x + 3

x = 0

d) 5 - 3x = 8x + 2

-11x = -3

$x = \frac{3}{11}$

e) 2x - 5 + 8x = 10x + 8

10x - 5 = 10x + 8 nu are sol

f) 2x + 7 = 3x - 2

-x = -9

x = 9

g) 2 + 6(4x-2) = 9 - 5(2x+3)

2 + 24x - 12 = 9 - 10x - 15

24x - 10 = -10x - 6

34x = 4

$x = \frac{2}{17}$

h) 5 + 3(10x+5) = 4 - 3(8x-2)

5 + 30x + 15 = 4 - 24x + 6

30x + 20 = -24x + 10

54x = -10

$x = \frac{ - 5}{27}$

i) 25 - 4(2x-3) = 16 + (5x-4) + 2

25 - 8x + 12 = 16 + 5x - 4 + 2

37 - 8x = 14 + 5x

-13x = - 23

$x = \frac{23}{13}$

j) 3(x+2) - 2(1-x) = 4x + 5

3x + 6 - 2 + 2x = 4x + 5

5x + 4 = 4x + 5

x = 1

Answer 2

a) x=5

b) x= - 2

c) x=0

d) x= 3/11

e) 10x-10x=13

f) x= 9

g) x=2/17

h) x=-5/27

i) x=23/13

j) x=1