• Простой уровень:
1) (5,8+х)*5,3=31,482;
2) 0,72:(0,8-х)=1,5;
3) 12 – х:1,05=1,8;
4) 128:х-16,9=23,1;
• Посложнее уровень:
5) (0,24-х)*0,37=0,074;
6) (1,65-0,3х):0,34=4,5;
0,72х + 0,065х – 0,0071 =0,04
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