" 1) 6,54×14 - (142 - 20,56): 24 = ? "
" 2) 12х - 5х = 3,192 " " 7х+5х+0,28 = 9,1 " " 3) 3,12 : 0,6+24 : 0,75 -3 : 25+28 :0,35 "
" 4) (5,8+х) × 5,3 = 31,482