Answer:
Step-by-step explanation:
6/14 = -9/21 = -12/28 = -15/35 = -18/42 = -21/49 = -24/56 = -27/63 = -30/70 = -33/77 = -36/84 = -39/91 = -42/98 = -45/105 = -48/112
Answer:

Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Multiply equation II by 2 and then add up the equations.