49:7=7:7=1
98:2=49:7=7:7=1
НОД(7)
<span>12-40:k=4</span>
<span>40:k=8</span>
<span>k=5 (30-n):2=9</span>
<span>30-n=18</span>
<span>n=12 7*b-15=6</span>
<span>7b=21</span>
<span>b=3 20:(x:9)=4</span>
<span>x:9=5</span>
<span>x=45 (9*t+37):8=8</span>
9t+37=64
9t=27
t=3
Ответ:
Пошаговое объяснение: