(5×5-5)×5 =(0×5)+(5×5-5)×5=((5×5-5)×5×5)/5=(10+5+5)×5)×(5/5)=(50-(5×5+5))×5=100
100 90 140
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150 110 70
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80 130 120
<span><span>7528 94
</span><span>-72 </span> ---------
32
- <span> 32</span><span>
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0
Ответ:94
</span></span>
-4z+6=-z+7,2
-4z+z=-6+7,2
-3z=1,2
z=0,4