120%x-17=7 70%x-25%x=2.7 x+115%x=2.58 64%x=16 31%x+63%x=0.47 x-28%=32.24

120℅x-17=7120℅x=7+17120℅x=24x=24÷120℅x=2070℅x-25℅x=2.745℅x=2.7x=2.7÷45℅x=6x+115℅x=2.58215℅x=2.58x=2.58÷215℅x=1.264℅x=16x=16÷64℅x=2531℅x+63℅x=0.4794℅x=0.47x=0.47÷94℅x=0.5x-28℅=32...