Решите уравнения:
4*(х-2)-12=36-4х
9х-17/2 -5х-4=1

спасибо большое) 

4x - 8 - 12 = 36 - 4x8x = 56x = 56/8x = 79x - 8.5 - 5x - 4 = 14x - 12.5 = 14x = 13.5x = 13.5/4x = 3.375

4*(х-2)-12=36-4х4x-8-12=36-4x4x+4x=36+208x=56x=56:8x=79х-17/2 -5х-4=14x=1+8,5+44x=13,5x=13,5:4x=3,375