Question

How do we solve this

Answer 1

1. Let the number be X

According to questions

5x +6 =41

5x = 35

X = 7

2.let the number be X

according to questions

3x + 7=34

3x = 27

X =9

3.let the number be X

according to questions

7x - 4 = 31

7x = 35

X = 5

4.let the number be X

according to questions

9x - 10 = 53

9x = 63

X = 7

5.let the number be X

according to questions

(X + 2)3 = 12

X + 2 = 4

X = 2

6 . let the number be X

according to questions

(X+7)5=65

X +7 = 13

X = 6

7.let the total number of counter in each box be x

according to questions

5x + 8=68

5x =60

X =12

Answer 2

1)Let, the number be, 'x'

By condition,

x*5+6=41

or, 5x=41-6

or, x = 35/5

or, x = 7

So, the number is 7.

2)Let, the number be, 'x'

By condition,

x*3+7=34

or,3x=34-7

or,x=27/3

or,x=9

So,  the number is 9.

3)Let, the number be,'x'

By condition,

x*7-4=31

or, 7x=31+4

or,x=35/7

or,x=5

So, the number is 5.

4)Let, the number be,'x'

By condition,

x*9-10=53

or,9x=53+10

or,x=63/9

or,x=7

So, the number is 7.

5)Let, the number be,'x'

By condition,

(x+2)*3=12

or, 3x+6=12

or, 3x=12-6

or,3x=6

or,x=6/3

or,x=2

So, the number is 2.

[∵ While we change the side of a number then as well as the sign of the number also gets changed such as (-) becomes (+) and vice versa.]