5х-3/2+2х+4/5=8 помогите решить

Question

5х-3/2+2х+4/5=8 помогите решить

Answer 1

50x/10 + 20x/10 - 15/20 + 8/10 =8

(50x+20x-15+8) / 10 = 8

(50x+20x)+(8-15) / 10 = 8

70x + (8-15) / 10 = 8

70x+(-7) / 10 = 8

10 (70x-7) / 10 = 8×10

70x-7=10×8

70x-7=80

70x+(7-7)=7+80

70x=80+7

70x=87

70x/70=87/70

x=87/70