Minecrafthardcore11ask
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a) (100-b:3)×5=490
b) (c:9:3)×4=20

acum please ​

Răspuns :

WinterFurryFoxask

Răspuns:

a) (100-b:3)x5=490/:5

100-b:3=98/+100

b:3=198/:3

b=66

b) (c:9:3)x4=20/:4

c:9:3=5/x3

c:9=15/x9

c=135

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