-6(0,5x-1,5)-4,5x-8 помогите срочно!!!!!!!!

6 (0,5x-1,5)-4,5x-8= -6*0,5х-6*(-1,5)-4,5х-8= -3х+9-4,5х-8=-7,5х+1

= -3х + 9 - 4,5х - 8 = -7,5х + 1