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7th Class Mathematics Sample Paper Mathematics Sample Paper - 6

  • question_answer
    Solve for y:
    (a) \[2y+\frac{5}{2}=\frac{37}{2}\]
    (b) \[\frac{y}{5}+3=2\]

    Answer:

    (a) \[2y+\frac{5}{2}=\frac{37}{2}\]
    \[2y=\frac{37}{2}--\frac{5}{2}\]
    \[2y=\frac{37-5}{2}\]
    \[2y=\frac{32}{2}\]
    2y = 16                                                                                                                       
    \[\frac{2y}{2}=\frac{16}{2}\]    [Dividing by 2]
    Thus,                y = 8
    (b) \[\frac{y}{5}+3=2\]
    \[\frac{y}{5}=2-3\]
    \[\frac{y}{5}=-1\]
    \[\frac{y}{5}=-1\times 5\]
    \[\frac{y}{5}=-5\]                                        


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