Ответ:
Пошаговое объяснение:
1) (38 + b) · 12 = 840;
38 + b = 840 : 12
38 + b = 70
b = 70-38
b = 32
A) 14(p - 30) = 630;
p - 30 = 630 : 14
p - 30 = 45
p = 45 + 30
p = 75
e) (43 - s): 17 = 289.
43 - s = 289 * 17
43 - s = 4913
s = 43 - 4913
s = -4870
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Answers & Comments
Ответ:
Пошаговое объяснение:
1) (38 + b) · 12 = 840;
38 + b = 840 : 12
38 + b = 70
b = 70-38
b = 32
A) 14(p - 30) = 630;
p - 30 = 630 : 14
p - 30 = 45
p = 45 + 30
p = 75
e) (43 - s): 17 = 289.
43 - s = 289 * 17
43 - s = 4913
s = 43 - 4913
s = -4870