Предмет: Математика, автор: tsechoevajasmi

Реши уравнения:
а) 7,2 – (6,2 – x) = 2,2;
б) –(10 – b) + 23,5 = –40,4;
срочно

Ответы

Автор ответа: ramit08
1
а) 7,2 – (6,2 – x) = 2,2;
7,2 – 6,2 +x = 2,2
 x = 2,2-1
x=1,2
б) –(10 – b) + 23,5 = –40,4;
 –10 + b + 23,5 = –40,4,
b= –40,4-13,5
b=-53,9
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