7th Class Mathematics Simple Equations

  • question_answer 1)
    Page No. 81 Complete the last column of the table.
    S. No. Equation Value Say, whether the equation is satisfied. (Yes/No)
    (i) \[x+3=0\] \[x=3\]
    (ii) \[x+3=0\] \[x=0\]
    (iii) \[x+3=0\] \[x=-3\text{ }\]
    (iv) \[x-7=1\] \[x=7\]
    (v) \[x-7=1\] \[x=8\]
    (vi) \[5x=25\] \[x=0\]
    (vii) \[5x=25\] \[x=5\]
    (viii) \[5x=25\] \[x=-5\]
    (ix) \[\frac{m}{3}=2\] \[\text{m}=-\text{6}\]
    (x) \[\frac{m}{3}=2\] \[\text{m}=0\]
    (xi) \[\frac{m}{3}=2\] \[\text{m}=\text{6}\]

    Answer:

                   
    S. No. Equation Value Say, whether the equation is satisfied. (Yes/No)
    (i) \[x+3=0\] \[x=3\] No
    (ii) \[x+3=0\] \[x=0\] No
    (iii) \[x+3=0\] \[x=-3\text{ }\] Yes
    (iv) \[x-7=1\] \[x=7\] No
    (v) \[x-7=1\] \[x=8\] Yes
    (vi) \[5x=25\] \[x=0\] No
    (vii) \[5x=25\] \[x=5\] Yes
    (viii) \[5x=25\] \[x=-5\] No
    (ix) \[\frac{m}{3}=2\] \[\text{m}=-\text{6}\] No
    (x) \[\frac{m}{3}=2\] \[\text{m}=0\] No
    (xi) \[\frac{m}{3}=2\] \[\text{m}=\text{6}\] Yes.


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