What is the answer to 5/m-7=6/m-9?

Simplifying

5m + -7 = 6m + -9

Reorder the terms:

-7 + 5m = 6m + -9

Reorder the terms:

-7 + 5m = -9 + 6m

Solving

-7 + 5m = -9 + 6m

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-6m' to each side of the equation.

-7 + 5m + -6m = -9 + 6m + -6m

Combine like terms: 5m + -6m = -1m

-7 + -1m = -9 + 6m + -6m

Combine like terms: 6m + -6m = 0

-7 + -1m = -9 + 0

-7 + -1m = -9

Add '7' to each side of the equation.

-7 + 7 + -1m = -9 + 7

Combine like terms: -7 + 7 = 0

0 + -1m = -9 + 7

-1m = -9 + 7

Combine like terms: -9 + 7 = -2

-1m = -2

Divide each side by '-1'.

m = 2

Simplifying

m = 2

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

x = 12

y = 15

step-by-step explanation: