(9х-20.7):47=0.9
(9х-20.7)=0.9*47=42.3
9х=42.3+20.7
9х=63
х=63:9=7
(890 − 36 × 4) × 37 − 106 × 8<span> = </span><span>26754
</span>23146 × 33 − 12146 × 33 − 3174 × 72<span> = </span><span>134472</span>
А) 1. 3,7+1,23=4,93
2. 15*4,93=73,95
б) 1. 6,43+4,97=11,4
2.11,4*39=444,6
в) 1. 2,027-0,34=1,687
2.1,687:10=0,1687
г) 1. 1,265+5,735=7
2. 1-0,785=0,215
3. 7*0,215=1,505
<em>вроде бы так:)</em>