Question

Номер 5 помогитееееее

Answer 1

7х=75-26
7х=49
х=49/7
х=2
--
100/z=300/3
100/z=100
z=100/100
z=1
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y/ (35:7)=6
у/5=6
у=6*5
у=30
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10/х=1
х=10/1
х=10

Answer 2

7*7,100:1,30(35:7)=6,10:10