Question

1. Решите уравнение: a.)7x+2(2,4-5x)=1,8 b.)2x+7/3-x-3/2=4x
/=дробрая линия

Answer 1

$tex]7x + 2(2.4 - 5x) = 1.8 \\ 7x + 4.8 - 10x = 1.8 \\ - 3x + 4.8 = 1.8 \\ - 3x = 1.8 - 4.8 \\ - 3x = - 3 \\ x = 1$

$2x + \frac{7}{3} - x - \frac{3}{2} = 4x \\ x + \frac{5}{6} = 4x \\ x - 4x = - \frac{5}{6} \\ - 3x = - \frac{5}{6} \\ x = \frac{5}{18}$