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5. (i) Square has 4 sides.   Counting every corner Thrice and no more! Implies we go around square thrice,i.e. 12 times. Add the count to me To get exactly thirty - four! Let us assume the number as y, we get 34.  12+y=34   So, 22 is the number .   (ii) If 23 is number for Sunday.    Then counting up, Saturday is 22, Friday is 21, Thursday is 20.  Wednesday is 19, Tuesday is 18, Monday is 17...
(d)   m 5 6 7 8 9 10 11 12 13 14 15 m - 7 -2 -1 0 1 2 3 4 5 6 7 8   At m=10, m-7 = 3 Thus, m=10 is  the solution
(c)   z 8 9 10 11 12 13 14 15 16 17 18 19 20 3 4 5 6 At z = 12 , Thus, z= 12 is a solution.
(b)   t 3 4 5 6 7 8 9 10 11 12 13 14 15 16 5t 15 20 25 30 35 40 45 50 55 60 65 70 75 80 At t=7, 5t = 35 Thus, t = 7 is the solution.
(a) m 1 2 3 4 5 6 7 8 9 10 11 12 13 m+10 11 12 13 14 15 16 17 18 19 20 21 22 23    At m = 6, m+10=16      Thus, m =6 is a solution.
(a) Putting given values in LHS.                                                                                 m = 10 is not a solution.                             m = 12 is a solution.                                                                                   m = 5 is not a solution.                              m = 15 is not a solution.       (b) Putting given values in LHS.    ...
S. no. Equation Value of variable Equ.satisfied Yes/No Sol. of LHS (a) 10 y =80   y = 10      No (b) 10 y = 80   y = 8      Yes (c) 10 y = 80     y = 5       No (d)  4l = 20    l = 20        No   (e)  4l = 20   l = 80         No (f)  4l = 20    l =5         Yes (g)   b + 5 =9   b = 5          No (h)   b + 5=9  b = 9           Yes (i)   b+5=9   b = 4        ...
(o) It is an equation of variable x.
(n) It is an equation with no variable.
(m) It is not an equation as LHS is greater than RHS.
(l) It is not an equation as LHS is less than RHS.
(k) It is an equation of varaible y.
(j) It is equation of variable p.
(i) It is an equation with no variable as both sides are equal.
(h) It is an equation of variable as both sides are equal. The variable is n.
(g) It is not an equation because LHS is less than RHS.
(f) It is an equation of variable x.
(e) It is an equation of variable as both sides are equal. The variable is x.
(d) It is an equation with no variable. It is a numerical equation.
(c) It is an equation with no variable. We may call this a numerical equation
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