Question

3/4(1,6-1 2/3а)-4 1/2(1,8-2/9а)

Answer 1

$\frac{3}{4} (1.6 - 1 \frac{2}{3} a) - 4 \frac{1}{2} (1.8 - \frac{2}{9}a) = \frac{3}{4} \times ( \frac{8}{5} - \frac{5}{3} a) - \frac{9}{2} \times ( \frac{9}{5} - \frac{2}{9} a) = \frac{3}{4} \times ( \frac{8}{5} - \frac{5}{3} a - 6( \frac{9}{5} - \frac{2}{9} a)) = \frac{3}{4} \times ( \frac{8}{5} - \frac{5}{3} a - \frac{54}{5} + \frac{4}{3} a) = \frac{3}{4} \times ( \frac{46}{5} - \frac{1}{3} a) = \frac{3}{4} \times \frac{1}{15} \times ( - 138 - 5a) = \frac{1}{4} \times \frac{1}{5} \times ( - 138 - 5a) = \frac{1}{20} \times ( - 138 - 5a)$

Answer 2

To solve the given expression, let's break it down step by step:

1. Simplify the expression within the parentheses: - For the first set of parentheses, 1,6 - 1 + 2/3a, we can combine the terms 1,6 and -1 to get 0,6. So the expression becomes 3/4 * 0,6 + 2/3a. - For the second set of parentheses, 1,8 - 2/9a, we can simplify it to 1,8 - 2/9a.

2. Multiply and divide: - Multiply 3/4 by 0,6 to get 0,45. - Multiply 1/2 by 1,8 to get 0,9. - Multiply 1/2 by -2/9a to get -1/9a.

3. Add and subtract: - Add 0,45 and -4 to get -3,55. - Add -1/9a and 0,9 to get -1/9a + 0,9.

So the simplified expression is -3,55 - 1/9a + 0,9.

Please note that the given expression contains variables (a) which means the final result will depend on the value of 'a'.