Question

can you solve please​

Answer 1

Step-by-step explanation:

$\\ question \: \: \: \: \: no \: \: \: \: 46 \\ x \2 - 1\5 =x \3 + 1 \4 \\ \\ \\ x \2 - x \3 = 1 \4 + 1 \5 \\ \\ 3x - 2x \6 = 5 + 4 \20 \\ \\ x \6 = 9 \20 \\ \\ 20x = 54 \\ x = 54 \20 \\ \\ x = 2.7$

$</p><p>[tex]question \: \: \: no \: \: \: \: 47 \\ x \2 - 3x \4 + 5x \6 = 21 \\ \\ 6x - 9x + 10x \12 = 21 \\ \\ \\ 16x - 9x \12 = 21 \\ \\ 7x \12 = 21 \\ \\ 7x = 21 \times 12 \\ \\ x = 21 \times 12 \7 \\ x = 36$[/tex]

$question \: \: no \: 48 \\ tex]x + 7 - 8x \3 = 17 \6 - 5x \2 \\ \\ \\ x - 8x \3 + 5x \2 = 17 \6 - 7 \\ 6x - 16x + 15x \6 = 17 - 42 \6 \\ \\ 21x - 16x = - 25 \\5x = - 25 \\ x = - 5 \: \\ \\ \\ \\ \\ question \: \: \: \: \: no \: \: \: 49 \\ \\ \\ 3x + 4 \2 - 6x = - 2 \5 \\ \\ \\ 15x + 20 = - 4 + 12x \\ \\ 3x + 24 = 0 \\ 3x = - 24 \\ x = - 8$

[

$tex]7x + 4 \x + 2 = - 4 \3 \\ \\ 21x + 12 = - 4x - 8 \\ 21x + 4x = - 8 - 12 \\ 25x = - 20 \\ x = - 20 \25 \\ x = - 4 \5 \\ \\ questio \: n \: \: \: \: \: \: \: no \: \: \: \: \: 50$[/tex]

question no 45

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

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

6x-3x-3+2x+4/6=1

8x-3x+1/6=1

5x+1=6

5x=5

x=1

Answer 2

ANSWERS:

45). 5

46). 2.7

47). 36

48). -4.33

49). -2.66

50). -5/6

EXPLANATION:

45. x - x-1 = 1 - x-2

2. 3

let LCM of LHS be 2 and of RHS be 3(according to the Qs.)

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

2. 3

=x - 1 = 1 - x

2. 3

=2(1 - x) = 3(x-1) [by cross multiplication]

=2 - 2x = 3x - 3

2 - 2x = 3x - 3

=-2x - 3x = -3 - 2

=-5x = -5

=x = -5/-5

=x = 5

___________________________

46. x - 1 = x + 1

2 5 3 4

LCM of LHS & RHS

=5x - 2 = 4x + 3

10. 12

= 12(5x-2) = 10(4x + 3) [by cross multiplication]

= 60x - 24 = 40x + 30

= 60x - 40x = 30 + 24

= x = 54/20

= x =2.7

_____________________

47. x - 3x + 5x = 21

2. 4. 6

LCM of LHS

= 6x - 9x + 10x = 21

12

= 7x = 21

12

= x = 21 × 12

7

= x = 3 × 12

= x=36

_____________________

48. x + 7 - 8x = 17 - 15x

3. 6. 2

LCM of LHS & RHS

= 3x + 21 - 8x = 17 - 15x

3. 6

= 21x - 5x = 17 - 15x

3. 6

= 6(21 - 5x) = 3(17 - 15x) [by cross multiplication]

= 126 - 30x = 51 -45x

= 45x - 30x = 51 - 126

= 15x = -65

= x = -65/15

= x = 13/3

= x = -4.33

______________________

49. 3x + 4 = -2

2 - 6x 5

5(3x - 4) = -2(2-6x) [by cross multiplication]

15x + 20 = 4 - 12x

15x - 12x = 4 - 20

6x = -16

x = -16/6

x = -2.66

______________________________

50.7x + 4 = -4

x + 2 3

3(7x - 4) = 3(x + 2). [by cross multiplication]

21x + 21 = 3x + 6

21x - 3x = 6 - 21

18x = -15

x = -15/18

x = (-5/6)