Question 543006
multiplying 2nd eqn by -3 and adding to 1st eqn (eliminating "a") ___ -26b + 25c = 154  (A)


multiplying 2nd eqn by -7 and adding to 3rd eqn (eliminating "a") ___ -65b + 33c = 326  (B)


multiplying eqn (A) by -5 and adding to 2 times eqn (B) (eliminating "b") ___ -59c = -118


solve for c, and substitute back to find a and b