498+(2,7-5x)(6x-7)=(9-0,5x)(60x+1)
498+16.2x-18.9-30x2-35x=540x+9-30x2-0.5x
498+16.2x-18.9+35x=540x+9-0.5x
479.1=51.2x=539.5+9
51.2x-539.5x=9-479.1
-488.3x=-470.1
x=4701/4883
x приблизительно 0.962728