Answer:
1 1/4 hours
Step-by-step explanation:
.75/.6=x/1
cross multiply
.75=.6x
divide by .6
x=1.25 hours
First one simplifies to 2x + 6 = 2x + 7 which can't be true so this one has No Solution.
Same applies to the second equation ( 5x + 15 = 5x - 15) No solution
also the last one has no solution because it simplifies to 4x + 20 = 4x + 19
Answer:

Step-by-step explanation:
See pic.
Answer:
a is the right answer you got this
Step-by-step explanation:
Answer:
The answer is the second one
im sorry if this is wrong
Step-by-step explanation: