Question

Решите уравнение:x+3/7+5-x/5=2-x/2​

Answer 1

(х+3)/7 + (5-х)/5 = (2-х)/2 | •70
(70:7=10; 70:5=14; 70:2=35)
10 (х+3) + 14 (5-х) = 35 (2-х)
10х + 30 + 70 - 14х = 70 - 35х
10х + 30 - 14х = -35х
-4х + 30 = -35х
-4х + 35х = -30
31х = -30
х = -30/31