3/4x+1/2, 3/4-1/2x, 3/4-(x+1/2) what phrases match each expression? one-half more than three fourths of a number, three fourths less than one half of a number, three fourths of a number decreased by one half, one half of a number more than three fourths, three fourths mius one half of a number, three fourths minus the sum of a number and one half