(3умнож b+160)подел ** 7 =40

Question

(3умнож b+160)подел на 7 =40

Answer 1

3b+160=280

3b=120

b=40

 

 

 

 

Answer 2

(3б+160)/7=40

40*7=280

280-160=120

3б=120

б=120/3

б=40

(3*40 + 160)/7=40