Question

9-4х=-9х-4
решите уравнение

Answer 1

9-4x+9x+4=0; 13+5x=0; 5x=-13; x=-13/5; x=-2,6

Answer 2

9-4х=-9х-4
9-4х+9х+4=0
5+9х=0
13х=-5
х=-13/5
х=-2,6
9-4*-2,6=-9*-2,6-4