Mathematics: Can some one help me ????????

Mathematics

13.08.2022 08:41

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Can some one help me ????????

Can some one help me
????????
Can some one help me
????????

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HSiddiqui5

4,7(5 marks)

$-\frac{1}{7}=-\frac{1}{2}u+\frac{2}{3}\ \ \ \ \ |multiply\ both\ sides\ by\ LCM(7;\ 2;\ 3)=42\\\\42\times(-\frac{1}{7})=42\times(-\frac{1}{2})u+42\times\frac{2}{3}\\\\-6=-21u+14\times2\ \ \ \ \ |add\ 21u\ to\ both\ sides\\\\21u-6=28\ \ \ \ \ \ |add\ 6\ to\ both\ sides\\\\21u=34\ \ \ \ \ |divide\ both\ sides\ by\ 21\\\\\boxed{u=\frac{34}{21}}$

ellisc7044

4,4(34 marks)

$-\frac{1}{7}=-\frac{1}{2}u+\frac{2}{3}|\cdot42\\
-6=-21u+28\\
21u=34\\
y=\frac{34}{21}
$
Can some one help me
????????

jb230

4,7(80 marks)

Step-by-step explanation:

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