Which properties justify the steps taken to solve the system?{2a+7b=0{3a-5b=31Drag the answers into the boxes to match each step.Pleaseeee help!!!!! I will mark you as brainlinest for correct answer!!!!!

Answer:Step-by-step explanation:The given equations are:2a+7b=0 and 3a-5b=31Statement                                                                    Reason1. 10a+35b=0, 21a-35b=217    (Multiply first equation by 5 and second by 7)2. 31a=217                                (Adding both the equations)3. a=7                                       (Dividing both sides by 31)4. 2(7)+7b=0                            (Substituting a=7 in first equation)5.14+7b=0                                (solving step 4)6. 7b=-14                                  (Subtracting 14 on both sides)