a) 3(2x-1) + 4(1-x) = 6x - 3 + 4 - 4x = 2x + 1
b)2(7x + 5) - 6(x - 2) = 14x + 10 - 6x + 12 = 8x + 22 = 2(4x + 11)
c)-2x(8 - x) - 5([tex]x^2[/tex] + 3x) = -16x + 2[tex]x^{2}[/tex] - 5[tex]x^{2}[/tex] - 15 = -3[tex]x^{2}[/tex] - 16x - 15 = -(3[tex]x^{2}[/tex] + 16x + 15)
d)5(3 - 2x) - (4x + 6)*3 = 15 - 10x - 12 x - 18 = -22x - 3 = -(22x + 3)
