Question

1. Write an equation for “ Ten times a is 70”.__________

2. If 3x-7 = x , find x_________

3.Is 3x-7=x and 3x= x-7 are same or different.________________

4. On subtracting y from zero , we get __________
5. The mean of first 7 odd numbers is _____________

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Answer 1

Answer:

1). 10(a) = 70

2). x = 7/2 = 3.5

3). No, they are different.

4). we get 0 - y = -(y)

5). Mean = 7

Thanks!

Answer 2

Answer:

1). 10a = 70

2). 3x - 7 = x

-7 = x - 3x

-7 = -2x. minus cut

2x =7

x= 7/2

3). different

4).0- y = -y

5). sum of all observation ÷ total no. of observation

1+3+5+7+9+11+13= 49/7 = 7