20/35/9
if 20 men working 7hours can complete a work in 10 days. in how many days does 15 men working 8 hours a day can complete it.
15a + 30b + 7a – 12b
2053471
2061758
2063172
(8^-1*5^-1)^-1
1413/20
For what value of k the system of equations has a unique solution? x - ky = 2 and 3x + 2y = -5
590871
167444
619287
634588
5451188
4024380
2471811
\lim _{x\to 1+}\left(2x\:−\:4\:+\:3^{^{\frac{x}{1-x^2}}}\right)
