Which fractions are greater than -5/12

a -/11

b -3/8

c -4/9

d -1/4

Which of the following are accepted without proof in a logical system? check all that apply.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Simplify. −4x^2 (5x^4−3x^2+x−2) −20x^6−12x^4+8x^3−8x^2 −20x^6+12x^4−4x^3+8x^2 −20x^8+12x^4−4x^2+8x −20x^6+12x^4+4x^3−8x^2