Решите плиз: (38+b)*12=840 14(p-30)=630 (43-s)*17=289

Question

Решите плиз:
(38+b)*12=840
14(p-30)=630
(43-s)*17=289

Answer 1

(38+b)*12=840
38+b=840 :12
38+b=70
b=70-38
b=32

14(p-30)=630
р-30=630:14
р-30=45
р=45+30
р=75

(43-s)*17=289
43-s=289 :17
43-s=17
s=43-17
s=26

Answer 2

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