Need now solve for x, 9|9-8x|=2x+3

answer,

x = 39/37 or x = 6/5

explanation for x = 6/5,

−8x + 9 = (−2/9x + 1/3)

−8x + 9 = −2/9x + −1/3 (simplify both sides of the equation)

−8x + 9 + 2/9x = −2/9x + −1/3 + 2/9x (add 2/9x to both sides)

-70/9x + 9 = −13

-70/9x + 9 − 9 = −1/3 −9 (subtract 9 from both sides)

−70/9x = −28/3

(9/−70) * (−70/9x) = (9/−70) * (−28/3) (multiply both sides by 9/(-70))

x = 6/5

hope this : -)

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !