Question

if (a -7) is a solution to the equation 8a=3b-5 what is a

Answer 1

 use elimination to solve each system of equations 8a+b=1 8a-3b=3 ... B=-1/2 ANSWER.8A-1/2=1. 8A=1+1/2. 8A=1.5. A=8/1.5. A=5 1/3 ANSWER.