Автор - sarsenbaevalajla9

помогите по математике​

Ответ

Автор - antoniy777

Ответ:

b-70*3=345

b - 210 = 345

b = 345 + 210

b = 555

a:(400-360)=8

a:40=8

a= 40*8

a= 320

45:5*b=900

9*b= 900

b=900 : 9

b= 100

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