Please help me solve these problems. I would like each step labeled and which formulas with name of formula used . Thanks so much.

1b. Solve each non-linear system 2 + y = 1 ( Hint : let y = 1 and v = = ) 1 2 = 5 X y 2 . Find a, b c, d so that L 34 -5 1 6 26 1 - 5 1 3 = 3 1 = [ 4 1-a1 5, Determine If each linear system is consistent or inconsistent, If the system is consistent, give the solution set. ( use any method ) ( 1 ) _ 2 x - 3y = 1 (ii) ( 7 x - 2y = - 3 - 6x + 9 y = - 3 - 21 x + by = 12