45 б) 7,36d-3,6d=39,48...

STRAWBERRYxMILK @STRAWBERRYxMILK

July 2022 1 7 Report

решите уравнения:а) b-13/15=13/45 б) 7,36d-3,6d=39,48

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Verified answer

$a)~~ b - \dfrac{13}{15}=\dfrac{13}{45};~~~b=\dfrac{13}{45}+\dfrac{13}{15}=\dfrac{13}{45}+\dfrac{13\cdot3}{15\cdot3}=\dfrac{13}{45}+\dfrac{39}{45}=\dfrac{52}{45}\\ \\~~~~\boldsymbol{b=1\dfrac{7}{45}}$

б) 7,36 d - 3,6 d = 39,48

(7,36 - 3,6) d = 39,48

3,76 d = 39,48

d = 39,48 : 3,76

d = 10,5

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