Solve by substitution method. If the system does not have a single ordered pair as a solution, state whether the system is dependent or inconsistent.
6x+42y=30…………………(1)
X=5-7y……………………..(2)
Solution:-
Take 6 common from equation 1
6(x+7y)=30
X+7y=5……………………..(3)
Both lines are same .they have infinite number of solutions this type of system known as dependent.