Question

1.4=0.7p solve the equation

Answer 1

All you need to do if divide 0.7 from both sides. So like this 

1.4=0.7p 
/0.7= 0.7 
and 0.7 cancels out so just figure out 1.4 divided by 0.7. 
You should get 2

Answer 2

You need to isolate p:
1.4 divided by 0.7 = 0.7p divided by 0.7 (this eliminates 0.7)
2 = p