What the answer to
5n+6=-4+10n

n = 2

work:

we are working to isolate n.

let's start by getting all the values of n on one side. subtract 5n from both sides.

6=-4+5n

next, to work on isolating n, lets add 4 to both sides.

10 = 5n

lastly, we need to divide both sides by 5.

2 = n

so, n has a value of 2.

i hope this helped and have a great day! if you need any further assistance with this specific question or i made any mistakes, please let me know!

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 !