Can someone give me the answer of all these equations?

Step-by-step explanation:

1. Rearrange the equation( actually all of them)

Take left hand side to the right for 1st question

1+5v+3+v-5-4v=0

2v+1=0

2v=-1

v=-1/2

2. Multiply RHS

15-x=2x+6

Move LHS to the right

2x+6-15+X=0

3x-9=0

3x=9

Divide both sides by 3

We get X=3

3.I'll leave the third one for you it's the same as second .

4.move RHS to the right (actually you can move any side but I'm trying to avoid a negative sign by moving the smaller to the side of the bigger number)

6m-11=2+9m-1

2+9m-1-6m+11=0

3m+12=0

m=-4

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.