Ineed to know which fractions are bigger plz asap

(a) compute the maclaurin polynomial m2(x) for f(x) = cos x. (b) use the polynomial of part (a) to estimate cos π 12. (c) use a calculator to compute the error made using the estimate from part (b) for the value of cos π 12. remember that the error is defined to be the absolute value of the difference between the true value and the estimate.

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

Ill mark the brainliest if you me with the these three questions 7,8,9