task №6 only!
Given: 6x+2y=12.
a) 2x+2y=12; (to use different slop);
b) 6x+2y=14; (to use different number on the right part of the given equation);
c) 3x+y=6; (to mulptiply or divide the both parts of the given equation by the same number).
Note, all the given solutions are not the only.
