0.3(5х-7)=3(0.2х+3.2)

Question

0.3(5х-7)=3(0.2х+3.2)

Answer 1

сокращаем обе части на 3, остается

 

0,1(5х - 7) = 0,2х + 3.2

0,5х - 0,7 = 0,2= + 3.2

0,3 х = 3,9

х = 3,9 : 0,3 = 13

Answer 2

0.3(5x-7)=3(0.2x+3.2)

1.5x-2.1=0.6x+9.6

1.5x-0.6x=9.6+2.1

0.9x=11.7

x=13