Question

EXERCISE 7B
1. Twice a number when decreased by 7 gives 45. Find the number.
2. Thrice a number when increased by 5 gives 44. Find the number.
26
3. Four added to twice a number yields Find the fraction.
5
4. A number when added to its half gives 72. Find the number.
5. A number added to its two-thirds is equal to 55. Find the number.
6. A number when multiplied by 4. exceeds itself by 45. Find the number
7. A number is as much greater than 21 as it is less than 71. Find the number
Hint. (x-21) = (71-x),​

Answer 1

Answer:

1).52

Step-by-step explanation:

1).2x-7=45

2x=45+7

2x=52

x=52÷2

x=26

2).3x+5=44

3x=44-5

3x=39

x=39÷3

x=13

Answer 2

Answer:

             1.  2x-7=45

                     2x=45+7

                     2x=52                                                                                                                        

                       x=52/2

                       x=26

             2.   3x+5=44

                        3x=44-5

                        3x=39

                          x=39/3

                          x=13

            4.    x/2+x=72

                       x+x=72*2

                         2x=144

                           x=144/2

                           x=72