Answer:

Step-by-step explanation:

3/4 and 2/5 have a common denominator which is twenty so you can rewrite the equation with just knowing that



You can then multiply both sides by twenty to solve this equation.
Hope this helps.
Answer:
Step-by-step explanation:

Answer:
5,6,7
Step-by-step explanation:
x-1+x+x+1=18
3x=18
x=6
5,6,7
Answer:
2/3 hr
4/5hr
Step-by-step explanation:
to attain time in motion...divide the distance by the speed
*the quantities must be the same though