Question

Решите алгебру, пожалуйста

Answer 1

$10(1 - 2x) = 5(2x - 3) - 3(11x - 5) \ 10 - 20x = 10x - 15 - 33x + 15 \ 33x - 20x - 10x = - 10 \ 3x = - 10 \ x = - frac{10}{3}$
$(1 - 5.1x) - (1.7x + 5.4) = 1 \ 1 - 5.1x - 1.7x - 5.4 = 1 \ 5.1x + 1.7x = - 5.4 \ 6.8x = - 5.4 \ x = - 5.4 div 6.8 \ x = - 5 frac{2}{5} div 6 frac{4}{5} \ x = - frac{27}{5} div frac{34}{5} \ x = - frac{27 times 5}{5 times 34} \ x = - frac{27}{34}$
${(2x - 3)}^{2} - {(2x + 3)}^{2} = 12 \ (2x - 3 + (2x + 3))(2x - 3 - (2x + 3)) = 12 \ (2x - 3 + 2x + 3)(2x - 3 - 2x - 3) = 12 \ 4x times ( - 6) = 12 \ - 24x = 12 \ x = - frac{12}{24} \ x = - frac{1}{2}$