b - 30 = 70 - 10 = ?

Question

b - 30 = 70 - 10 = ?

Comments

b - 30 = 70 - 10 = 60

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b=70-10+30b=90

Answer 1

B=90 d-30=70-10. 70-10=60

Answer 2

В-30=60 следует ,в=60+30=90