Решите уравнение: x+5-8x=7+2x-4 0.5x-3=0.8-1.4x

Question

Решите уравнение:

x+5-8x=7+2x-4

0.5x-3=0.8-1.4x

Answer 1

5-7+4=8x+2x-x
2=9x
x=2/9

Answer 2

х+5-8x=7+2x-4

x-8x-2x=7-4-5

-9x=-2(*-1)

9x=2

x=2/9

 

0.5x-3=0.8-1.4x

0.5x+1.4x=0.8+3

1.9x=3.8

x=2