Question

1.- 3/4 + 1/6 - 9/3 - 1/12
2.- 3• 5² - 9² ÷ 3-10 + 11
3.- 10/4 + 1/6 - 9/8 - 1.03
pls ayuda​

Answer 1

1-

$\frac{3}{4} + \frac{1}{6} - \frac{9}{3} - \frac{1}{12}= \\\\\frac{9 + 2 - 36 - 1}{12} = \frac{-26}{12} = \frac{-13}{6}$

2-

$3 . 5^2 - 9^2 : 3 - 10 + 11 = \\3 . 25 - 81 : 3 - 10 + 11 =\\75 - 27 - 10 + 11 =\\48 - 10 + 11 = 49$

3-

$\frac{10}{4} + \frac{1}{6} - \frac{9}{8} - 1. 3 =\\\\\frac{10}{4} + \frac{1}{6} - \frac{9}{8} - 3=\\\\\frac{60 + 4 - 18 - 24 }{24} = \frac{12}{24} = \frac{1}{2}$