Question

25х + 23х - 75х = 2 12

Answer 1

$frac{2}{5}x + frac{2}{3}x - frac{7}{5}x = 2 frac{1}{2} \ (frac{2}{5} + frac{2}{3} - frac{7}{5} )x = 2 frac{1}{2} \ -frac{1}{3} x = 2 frac{1}{2} \ x = 2 frac{1}{2} : (- frac{1}{3} ) \ x = -7 frac{1}{2}$